Author: James Meritt (jwm@sun4.jhuapl.edu) Title: James Meritt's general anti-creationism
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Author: James Meritt (jwm@sun4.jhuapl.edu)
Title: James Meritt's general anti-creationism FAQ
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Topics:
}Creationism deserves equal time
}Evolutionists themselves admit they have no proof
}evolutionists themselves have admitted to flaws in their arguement.
}some scientists don't agree
}Evolution isn't a science
}Life is too complex to have happened by chance.
}Evolution violates the 2nd law of thermodynamics.
}Methods of dating the earth are inaccurate.
}Radioactive dating can't be calibrated.
}radioactive decay rates did not remain constant
}the creation of matter or energy is not now taking place,
_______________________________________________________________________
}- Creationism deserves equal time because evolution is only a theory.
But a theory in the scientiftific sense of the word, meaning that it explains
a wide range of phenomena and that there's lots of data to back it up.
Creationism, on the other hand, isn't even a theory; it's an assertion.
"Equal time" in what? In schools in general, or in science classes?
Science classes are suppose to teach science. There are two criteria
for this:
1. It must be falsifiable i.e. there must be some way to show that the
theory is incorrect. The theory must be testable. Evolution is,
in that there can be things specified which, if they can be verified,
would disprove evolution. Creationism allows no such test.
2. It must be able to make predictions i.e. it must be able to tell
you how something WILL occur (and then you must be able to verify
the accuracy of the prediction). The theories which compose
evolution are useful in this regard in that they have made predictions
concerning population densities, physiologies, chemistries, fossil
find forecasts,... Creationism does none of this. At best, its
"predictions" are either in the past (already happened) or
unverifiable.
}- Evolutionists themselves admit they have no proof.
That is because science doesn't "prove": it shows possibilities and disproves
things and makes predictions.
Science doesn't deal in proof. It deals in evidence. Evolution has LOTS of
evidence.
} Twenty objections admitted: evolutionists themselves have admitted
} to flaws in their arguement.
Isn't it nice to have a system that you can critize and test?
The only system which has no flaws is one in which those flaws are either
defined away or ignored. We call this "dogma". The presence of these
flaws reveils the presence of active investigation into the limits.
We call this "science".
} Scientists condemn evolution: some scientists don't agree etc. ....
Then the same argument disproves Creationism, too, since many (most?)
theologians don't agree with it.
What else has 100% concurrence? Gravity is not 100% concurred with, either.
}- Evolution isn't a science because you can't observe things that happened
} millions of years ago.
Buy you can observe the RESULTS of things that happened millions of years
ago. And then, by using basic scientific knowledge, extrapolate back.
And by observing trends within the period you can derive general rules
which may then be used for predictions into the future.
Just the historical observation is not evolution.
}Evolution is not so much a science as it is a philosophy or an attitude
}of mind... it is manifestly impossible to prove they (evolutionary
}changes of the past) actually did take place.
I suppose that, if he saw a open square in the wall and pieces of glass
by it and a rock sitting amongst the glass that he could draw no conclusions
about the possible presence in the past of a window...
}- Life is too complex to have happened by chance.
Another is the "randomness argument". What is "random",
anyway? We are never told. It says that self organization cannot
occur because the process is "blind" and "random" that is supposed to
drive it. Never mind that the system has a finite number of states it
can occupy and its history can constrain its future states. This
borrows from the thermodynamic argument the confusion over entropy and
open system states.
The theory of evolution doesn't say it did happen by chance. This argument
completely ignores natural selection.
Please read:
Life in Darwin's Universe
G. Bylinsky, Omni Sept 79
The Evolution of Ecological Systems
May, Scientific American, Sept 1978
Chemical Evolution and the Origin of Life
Dickerson, Scientific American, Sept 1978
The Evolution of the Earliest Cells
Schopf, Scientific American, Sept 1978
The Evolution of Multicellular Plants and Animals
Valentine, Scientific American, Sept 1978
It is easy to get VERY complicated systems
containing a tremendous amount of information starting from very simple,
low information systems. Two methods:
1. fractal structures - start with a very simple rule and repeat it over
and over and over. The resulting structure can be (usually is) VERY
complicated, but the formation equations can be very, very simple. And
the universe has had a long time to do so. Example: Look at a snowflake.
2. chaos - You can get very, very complicated systems if you use nonlinearities
in the progression. That is why weather forecasting doesn't work.
Complexity does not imply design. Recursion or nonlinearity work quite well.
And the word is recursive and very non-linear.
}- Evolution violates the 2nd law of thermodynamics.
Not true. The 2nd law of thermodynamics applies only to closed systems. The
Earth is not a closed system.
That if thermo could somehow forbid evolution, then it would also
forbid babies from growing to be adults, and parents from having children.
In fact, we are agents of entropy: we organize our bodies at the expense
of the organization of our environment, which we digest and burn.
Creationists often (ab)use
the Second Law of Thermodynamics, apparently not realizing that it explicitly
states, "...in a closed system...". By definition, a closed system cannot
contain anything external to itself. A Creator who is entirely bounded by
His own creation seems non-sensical, and I can't imagine that many creationists
would accept such a limited God anyway. Thus, God and Thermodynamics are
mutually exclusive; to invoke the Second Law is to claim that God left!!!!!
A subsequent portion of the outline again invokes entropy, stating that
"all species are degenerating, since disorder must increase".
Ignoring the Theological arguments for the moment, we reiterate,
"...in a CLOSED system...". Earth is hardly a closed system. To find a
*LARGE* source of negative entropy, one need only look upward on a clear day.
The sun delivers approximately 1 horse-power per square meter (sorry for the
mixed units, I don't recall the conversion factor to joules/sec)
of free energy to the biosphere. Likewise, meteors shower us with several
tonnes per day of extra mass, some of it in pre-biotic form - i.e. complex
carbon molecules such as formaldehyde and others. Larger objects such as
comets and Icarus class asteroid strikes transfer huge amounts of mass,
energy, and momentum to the earth. Orbital perturbations and decay, friction
from the moon's gravity, and radioactive decay, all add to the total.
Sorry, entropy as a disproof of cosmological and biological evolution simply
won't wash. Spread the word.
[It appears that, more recently, the creationists have been hammered enough
with the inapplicability of the Second Law of Theormdynamics that they
have modified it slightly -- the reference is now to a closed *universe*,
not a closed Earth; the rest of the argument remains essentially
unchanged.]
Creationists say that systems cannot self-organize because that would violate
the second law of thermodynamics, never mind that such systems are not at
equillibrium and are open systems.
}- Methods of dating the earth are inaccurate.
Exactly what is meant by "inaccurate" leaves much to be desired.
Please see the August 1989 Scientific American article on the Age
of the Earth. (page 90, by Lawrence Badash, "The Age-of-the-Earth
Debate")
} - Radioactive dating can't be calibrated.
You are in this case Dead Wrong. Dating of ancient rocks by
radiometric methods (e.g., Uranium-Lead, Potassium-Argon, Rubidium-
Strontium) does NOT, repeat NOT depend upon our having available a sample
of known age to calibrate the method. Indeed, this is PRECISELY WHY these
methods are so useful. The only calibration required is the measurement
of decay rates, which can be done IN THE LABORATORY. Furthermore, these
methods can be used in ways that do NOT, repeat NOT depend on any
assumptions about the initial amounts of the various isotopes involved.
Please read the section in Chapter 17 of Strahler's book, _Science and
Earth History_.
It is true that Carbon-14 dates must be calibrated for variations in the
amount of 14C produced in the atmosphere; however, the corrections are
small (~10%) and affect only recent ages (~50,000 years). This method is
not used to date rocks.
- The guy who thought that radioactive dating required knowing the
initial amount of lead. He apparently had never heard of isotopes,
either. He made a big thing about a science he was a master of: he wrote
its name on the blackboard: "numerical analysis". He indicated how this
allowed him to "proved" that radiodating was wildly inaccurate. No
mention of the fact that the earth was still real old. He encouraged
people to go buy a book on numerical analysis: he gave its name. He
didn't bother to encourage people to buy a book on dating, perhaps
because he hadn't read one himself ?
} radioactive decay rates did not remain constant, so you can't
}accurately date things
If radioactive decay rates were to change, the structure of stars
would be affected. But even very distant stars (whose light has been
travelling towards us for very long times) have the structure that is
predicted by theory assuming present decay rates. They do not have
the structure that would be predicted for them if the decay rates
were many orders of magnitude larger.
There are two major kinds of radioactive decay, alpha decay and beta
decay. They are due to different physical processes and are governed
by different natural constants. If the decay rates were to change in
time, this would produce discrepant dates in rocks that can be dated
independently by several different decay series. These discrepancies
are not observed.
If the decay rates were large enough to produce 4.5 billion years' of
apparent ageing in only 6000 years of wall-clock time, the decay
rates would have had to have been millions to billions of times as
large when Adam and Eve were around as now. The heat generated would
have melted the earth, which would still be molten. Furthermore, the
earth would have been too radioactive to support life then. Adam and
Eve would have glowed for other reasons than their nearness to God.
}These laws affirm the fact that the creation of matter or energy is not
}know taking place, and, in fact, that the available energy of the universe
}as a whole is continually running down rather than building up.
Point of fact, matter IS being created currently. Also destroyed.
See "virtual particles". And the "available energy of the universe
as a whole" says nothing about localities within it...
Topics:
} - Helmholtz's contraction theory says the sun is < 20,000,000 years.
} - Sun is shrinking by ~5 feet per hour.
} - Lunar dust--only 1 to 3 inches, not 54 feet.
} - Deterioration of earth's magnetic field
} - Atmospheric helium should have built up
} - Receding moon would have been touching earth
} - All comets would have disintegrated after 10,000 years.
} - galaxy formation.
) - biblical cosmology
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} - Helmholtz's contraction theory says the sun is < 20,000,000 years.
This (suns energy comes from contraction) is decades old and discarded soon
after the discovery of radioactivity. See the Scientific American article
from August 1989. The German physicst Hermann von Helmholtz formulated
this concept around 1869. It has been soundly rebuffed in the last
100 years.
- The guy who thought that we were detecting 0 (zero) solar neutrinos,
thus proving his theory that the sun was shining due to the
gravitational energy released as it shrank.
(they are there, and have been detected)
} - Sun is shrinking by ~5 feet per hour.
}i.e losing 0.01% per year. 6,000 creation = ~6% shrinkage, but 20,000,000
}years ago the sun touched the earth and 100,000 years ago the sun was twice
}as large (making life impossible).
I am interested in how you decide that this is a steady-state system?
A "Sun" that large could not possibly have this solar system.
A brief discussion of this is found in "Looking Inside the Sun", ASTRONOMY,
March 1989.
Analysis of historical records of eclipses and transits give varying
numbers. One result gives 2.25 arcseconds per century, similar to the
above figure. Another result gives an upper limit of 0.3 arcsecond per
century, but is also consistent with no shrinkage. Two more historical
analyses indicate that the sun was a bit larger a century ago than
today. Current measurements indicate that the sun is not now shrinking.
The long term stability of the size of the sun remains unknown.
} - Lunar dust--only 1 to 3 inches, not 54 feet.
The calculation you refer to is given by Henry Morris on pp.
151-153 of _Scientific Creationism_. It is based on a grossly erroneous
figure of 14 million tons of meteoritic dust per year, quoted by Petterson
in 1960. Morris misinterpreted Petterson's article. Petterson published a
figure of 15 (not 14) million tons per year as an _upper limit_. In
other words, Petterson said that the value is _not more than_ 15 million
tons per year. He was not able to measure an actual value. Morris
erroneously chose to interpret it to mean it was _equal_ to 14
million tons per year. Accurate values were measured in the late
1960's. The actual value is much lower than 15 million tons per year.
Dalrymple gives the value of 22,000 tons per year, nearly 700 times
smaller than your figure. That changes your 54 foot figure into about
2 cm, which is quite consistent with the amount of surface soil the
astronauts found on the Moon (it was considerably more than 1-2 mm).
My copy of "Everyman's Astronomy" indicates that the earth collects
about 9000 kg per day from meteors of visual magnitude 5.0 or brighter.
Assuming a typical rock density of 3 g/cc, this corresponds to an
accumulation rate of one inch per 10 billion years. Unfortunately no
data is presented for fainter meteors. I wouldn't be surprised to find
that the actual rate is one or two orders of magnitude higher, but "1
inch in 8000 years" is off by six orders of magnitude.
A dust accumulation rate of "one inch per 8000 years" should should
create a spectacular yearround meteor shower, and cause severe pitting
of the space shuttle windshields in just a single orbit. My quick estimates
give values far higher than have been actually observed.
} - Deterioration of earth's magnetic field, at present rates, implies an
} excessive field 10,000 years ago.
> Decay of Earth's Magnetic Field - Result of research by Thomas Barnes
> during his tenure as Physics Professor at UTEP. Published in _Origin and
> Destiny of Earth's Magnetic Field_, 1973. Barnes notes the measured
> values over the last 150 years and models according to uniformitarian
> principles.
The decay is not a steady state. In fact, there is considerable evidence
for reversals. The atlantic ocean floor as it spreads shown the weakening
- reversing - strengthening recorded in its stone as the contenents
spread from the mid-atlantic ridge.
The field is expected to reverse sometime in the next few thousand
years. A time scale on page 78 shows the reversals over the past 170
million years, as deduced from the magnetic patterns in oceanic crust.
I counted about 200 reversals on the chart.
Briefly, Barnes took approximately 150 years of data on the Earth's
dipole magnetic field and extrapolated it backwards to about 10000
years Before Present (B.P.). He stated that the field 10,000 years ago
would, on this calculation, have been as strong as that of a magnetic
star, and stated (correctly) that this was absurd. However, there
are four fatal flaws in his analysis.
In the first place, Barnes studied only the *dipole* component of the
Earth's magnetic field, In fact, the very same data that Barnes used
show that the *nondipole* component of the field *increased* during
the same period of time, almost exactly cancelling the decrease in
the dipole field that Barnes calculated (D. Brent Dalrymple, U. S.
Geological Survey, Menlo Park CA, in *Reviews of 31 Creationist Books*).
This alone is sufficient to destroy the basis of his work.
The second failure of Barnes' study was the idea that one can take data
from a short period of time and simply extrapolate it backwards to obtain
a reliable estimate at a time remotely removed from the data. Anyone
competent in analyzing scientific data knows that extrapolations are good
only for a relatively short period of time, if at all, and that the further
away from the actual data one goes, the less reliable it becomes. Barnes
extrapolated 150 years' worth of data back 10,000 years! In real life,
one would be surprised if extrapolation of these data more than a few
hundred years back were accurate.
The third failure of Barnes' study was the mathematical model he
chose. He decided to fit the data to an exponential. The data fit
a straight line just as well (see Figure 1 of Stephen G. Brush's
article in *Scientists Confront Creationism*), but a straight line
would have given a much older age for the Earth than the 10,000 years
that Barnes, because of his Biblical literalism, wishes to promote.
The fourth failure of Barnes' study was his failure to consider any other
evidence than the 150 years worth of data from geomagnetic observatories
that he used. There exists, in paleomagnetic data, a long record of
the Earth's magnetic dipole strength (extending backwards for millions
of years). The data are in agreement with the observatory data Barnes
used over their common intersection, but they differ drastically from
Barnes' extrapolation when one goes further back in time.
} - Atmospheric helium should have built up more from U decay.
This statement is false. It falls precisely within predicted limits.
Please read:
Calculations on the Composition of the terrestrial Planets
Reynolds & Summers, Journal of Geophysical Research vol 74, no 10
May 15, 1969 p 2494
The formation of the Earth from Planetesimals
Wetherill, Scientific American June 1981
Cloud, Preston E., Jr., "Atmospheric and Hydrospheric Evolution on
the Primitive Earth", Science 160, (17 May 1968), pp 729 - 736
Mart, Michael H, "The Effect of a Planet's Size on the Evolution of
its Atmosphere", published in some conference or another; I
got a copy from the author. (ave Allen )
Our Evolving Atmosphere
Is Anyone There? by Isacc Asimov
The Evolution of the Atmosphere of the Earth
Hart, Icarus, 33, 23-39, 1978
Evolution of the Atmosphere and Oceans
Holland, Lazar & McCaffery, Nature vol 320, 6 mar 1986
Heat and Helium in the Earth
O'Nions & Oxburgh, Nature, vol 306, 1 Dec 1983
The Atmosphere
Ingersoll, Scientific American, Sept 1983
} - Receding moon would have been touching earth 2 billion years ago.
Check up on your orbital dynamics...
Assumes a steady rate of recession. Assumes the moon wasn't captured less
than 2 billion years ago.
} - All comets would have disintegrated after 10,000 years.
Jupiter and Saturn wreak havoc to the comet orbits. Some long-period
comets are perturbed into short period orbits, others are permanently
ejected. Comets are believed to have a short lifetime after being
perturbed to short periods.
Actually, the Oort cometary cloud hypothesis (published by Jan H. Oort in
1950) was originally proposed in order to explain "the rate of appearance
of long-period comets" (i.e. there are a lot of them). It really didn't
have anything to do with the age of short-period comets (which the note
above refers to). [Long-period > 200 yrs, short-period < 200 yrs.]
The problem that is referred to by the creationist here is that the short-
period comets *have not occupied their present orbits* for very long (in
astronomical terms). Each time a comet passes close to the sun, some of
its matter is driven off into space by the sun's energy (forming its "tail").
"Short-period" comets are believed by astronomers to have a lifetime of
only a few thousand years, because after that all of their "tail-producing"
matter would be used up (indeed, astronomers have noted comets to "vanish";
the remaining material only makes its presence known upon entering the
Earth's atmosphere; this is likely the origin of meteoroid swarms.)
However, the fact that a comet cannot have occupied its present orbit for
very long does not automatically imply that it is young. The Oort hypothesis
does explain this problem as well, in that long-period comets -- if frequent
enough -- will be moved into short-period orbits by a relatively near approach
to a planet (comet loses momentum, planet gains it, comet is now in a vastly
shorter orbit, planet is now in a very slightly longer orbit).
In fact, of the short-period comets, roughly half orbit pretty much between
the sun and jupiter, leading astronomers to belive that jupiter "captured"
them into their current orbits. (Statistically, we would expect the largest
planet -- the best "capturer" -- to have captured the most short-period
comets).
Finally, nobody really knows about the Oort cloud. Astronomers like the
way it explains the frequency of long-period comets, and there is much
support for it amongst them. It apparently also explains the youth of the
short-period comets, quite nicely. However, until we see a comet get sucked
into a short-period orbit (apparently this must happen every 100 years or
so), or until we send something out to 10,000 A.U., Oort's proposal remains
a hypothesis. (Conclusion: it was *not* cooked up to explain young short-
period comets; this is something of a "fringe benefit". But we aren't very
sure that it's true, either.)
[From Strahler, "Science and Earth History", New York:Prometheus, 1987; p. 143]
}An important element in the argument against the evolutionary universe
}is the failure of conventional cosomology to solve the problem of
}galaxy formation.
With the development of GUT, we see galaxy formation is no longer a problem
at all but simply one more natural phenomenon with a perfectly natural
explaination.
James S. Trefil
_The Moment of Creation_
) - biblical cosmology
And in several places in the Bible, the sky is referred to as
a vault, with the stars stuck on it. Genesis 1 refers to water above
this vault (an idea no doubt borrowed from the Babylonian cosmology,
which pictured the Earth as a flat disk inside a cosmic bubble in a
cosmic sea). The Book of Revelation states that the stars will someday
fall out of the sky like figs from a tree. The Bible says little about
the shape of the Earth, referring in one place to the "circle" of the
Earth (a disk shape), and in another place to the "four corners" of
the Earth (a rectangular surface shape). In one of the Gospels, the
Devil tempted Jesus by taking him up a mountain where he could see
"all the kingdoms of the world" (no further info on this remarkable
mountain). This would only be possible if the Earth was flat.
The Bible does indicate more clearly, however, that the Earth
is motionless. Witness Joshua's telling the Sun (and not the Earth) to
stop just so he could win one of his battles, and some of the Psalms
that state that the Earth is motionless. The Joshua story can be used
to find a Biblical estimate of the distances of the Sun and the Moon
from the Earth. Since we are told that the Sun was stopped to
illuminate the Valley of Gibeon, and the Moon to illuminate the Valley
of Aijalon, we conclude that either one of them would have been
insufficient for both -- and that requires that the Sun be low when
viewed from the Moon's valley, as it were, and vice versa. This
implies that the distances to the Sun and the Moon are comparable to
the distance between the Valleys of Gibeon and Aijalon, which is about
10 mi.
In all fairness to the writers of the Bible, none of this
cosmology is any worse than the cosmological pictures developed by
surrounding peoples, with one exception. Ancient Greek
proto-scientists (if that is the proper word) were, without any modern
technology, able to establish that the Earth was approximately
spherical, and were able to work out the approximate size of the Earth
and the distance to the Moon. The distance to the Sun was more
difficult, and almost all were agreed that the Sun moved around the
Earth. But this knowledge was gained only after the Old Testament was
written, though some of the writers of the New Testament may have
learned of Aristotle's demonstration of the approximate sphericity of
the Earth three centuries ago. The Greeks had data which anyone else
living before modern times could collect, but they put the pieces
together in the right fashion, and, for some reason, there is no hint
of that in the Bible.
Topics:
}rift between mathematicians & biologists
}exponential population growth
}Various conceivable patterns fail to emerge
}Complexity from Simplicity
> Here's an interesting story... (I think)... In 1967, a few
> mathematicians and biologists were chatting over a picnic lunch
> organised by Victor Weisskopf, prof. of physics at MIT. A "weird"
> discussion took place as the conversation turned to the subject of
> evolution by natural selection. The mathematicians were stunned by
> the optimism of the evolutionists about what could be achieved by
> chance. The wide rift between the participants led them to organise a
> conference on "Mathematical Challenges to the Neo-Darwinian Theory of
> Evolution"...(skip to the conference)... which opened with a paper by
> Murray Eden, Prof. of Electrical Engineering at MIT, entitled "The
> Inadequacy of Neo-Darwinian Evolution as a Scientific Theory". Eden
> showed that if it required a mere six mutations to bring about an
> adaptive change, this would occur by chance only once in a billion
> years --while, if two dozen genes were involved, it would require
> 10,000,000,000 years, which is much longer than the age of the earth.
> (See Gordon R. Taylor's "The Great Evolution Mystery"). "Since
> evolution does occur and has occured, something more than chance
> mutation must be involved."
> Von Neumann & complexity
It's hard to see how the described "wide rift" between biologists and
mathematicians could exist, since most of the population geneticists
I know *are* mathematicians--like my thesis advisor, a PhD in Statistics.
Population genetics is an intrinsically mathematical subject, as
my students found with great dismay about 2 weeks into the course
I TA'ed on the subject.....
I get a little angry when people seem to be implying that evolution is
casually refutable and was refuted (by a professor of electrical engineering?)
decades ago. Do they really think that two decades of bright,
dedicated biologists would stick to a theory that this kind of argument
could refute?
Adaptive change by mutation has been shown in the laboratory and is
not in question. It is quite easy to demonstrate in bacteria, and
advantageous forms which were generated by the co-occurance of multiple
mutations are quite possible. Three points are usually being missed
by people who make Prof. Eden's mistake:
1. Disadvantageous forms can persist in the population for a long time;
2. Multiple ways to the same end (multiple mutations giving the same
result) are not only possible but common;
3. Intermediate steps often have an inobvious advantage in themselves,
making them targets of natural selection.
Seriously, there is something badly wrong with the mathematician's
models if this story is true. In the first place, there isn't really
a necessity for each mutation to occur from a blank slate - virtually all
species have a fair amount of diversity. In the second place, there is
a considerable amount of recombination - even with base pairs on the
same chromosome (crossover) (or maybe the mathematician has never heard
of sex :-). Thirdly, the rate of mutations can be measured and is
significantly higher than what appears to be implied by the fixing of 6
mutations in 1 billion years. Fourthly, if any intermediate forms have
any slight advantage (due to partial implementation of the feature),
then those forms will be selected -- and selection is NOT a random process.
Fifthly, many single point mutations have similar/identical effect (that is,
it wouldn't be necessary for 6 specific mutations to occur but one from
each of 6 different sets, a much easier problem).
All I can figure is that the model assumes a population of a single
homozygous individual whose progeny never exchange any genetic material
and in which the mutated genes never recombine by crossover during mitosis.
In other words, sort of like analyzing the aerodynamics of racehorses by
assuming a spherical horse
Sounds like he's talking about six simultaneous mutations, which may
very well be statistically phenomenal. Not required they be simultaneous
by evolution however, and once one mutation is replicating throughout
a group of related organisms, the odds then go up that one of them might
develop another significant mutation in addition to the one they are now
carrying.
} - exponential population growth
And by the same exponential growth law we are up to our armpits in roaches.
This does obviously not happen, therefore there are other constraints.
What leads Creationists to conclude that the exponential growth constants for
a 50 year sample apply to 5000 years? This is known as "extrapolating beyond
region of known fit".
The growth curve is exponential. The population origin can
be extended back much further in time, and the recent doublings
are bunched together.
I love exponential growth when used by those unaware of the basics for the
derivation. You can use the same system to show that we are up to our
armpits in fruit flies every 3 years or so...
According to U.N. figures, the world population in 1650 was 508 million,
up from 200-300 million in 1 AD. This corresponds to a growth rate of
0.032 to 0.057% per year during much of recorded history, far lower than
the "sickly 0.5%" used here.
5000 years of growth at 0.057% would increase the population by a factor
of 17, much less than the 7*10^10 implied by a rate of 0.5%.
}- Various conceivable patterns fail to emerge, despite an overwhelming
} tendency to diversify.
There is always luck. If the mutation does not occur, you cannot select
for it. Evolution is not aimed. That's a deity's job. Evolution handles
the current entity, not some future not-yet-conceived entity for some
not-yet environment.
} Complexity from Simplicity
There was no primordial chaos before the big bang - not really. Instead,
everything was neatly concentrated in one location. Then it scattered,
and is still scattering, a disorderliness far exceeding the structural
order of galaxies, stars, planets, and life forms which have appeared in
the course of the process.
Poul Anderson
"Science & Creation"
Analog, Sept 1983
ref the information example. It is easy to get VERY complicated systems
containing a tremendous amount of information starting from very simple,
low information systems. Two methods:
1. fractal structures - start with a very simple rule and repeat it over
and over and over. The resulting structure can be (usually is) VERY
complicated, but the formation equations can be very, very simple. And
the universe has had a long time to do so. Example: Look at a snowflake.
2. chaos - You can get very, very complicated systems if you use nonlinearities
in the progression. That is why weather forecasting doesn't work.
Complexity does not imply design. Recursion or nonlinearity work quite well.
And the world is recursive and very non-linear.
I went and got "Theory of Self-Reproducing Automata" by Von Neumann.
You know that it was done in 1966 before most of the chaos & fractal work?
As an initial look, I see how this is NOT applicable to life as
Micha tried to do in <10541@dasys1.UUCP>. Looking at section 5.3.2
"Self-Reproducing automata" we find that, under his constraints, the
secondary (initially quiescent) automaton is identical to the parent,
except that the constructing automaton is larger, and in a sense more
complex, because the construction automaton contains the complete
plan and a unit which interprets and executes this plan. This should
NOT apply to biological forms as discussed here because:
The plan IS the unit that executes itself. In Mary's term, the life is
the language.
and, what I consider more relevant
The constructed automaton IS NOT A DUPLICATE of the constructing automaton.
No parent unit that I am aware of (excluding fission reproduction, in which
the parent unit cannot be identified afterwards) is the child a
duplication of the parent. In every case that I am aware of the constructed
unit is a simpler and much smaller unit, which grows OF ITSELF into a
near-copy of the original. Since the complexity is added AFTER the
reproduction process, the reproduction process should not be a limiting
factor. Proof: watch almost ANYTHING grow up.
Therefore, while the descent is INITIALLY simpler than the parent, its
final state can be more complex. Therefore, the argument that information
theory proves that life could not have come from non-life is invalid.
BTW: New systems of cooperating parts have evolved, and they are not even
biological. See "The Evolution of Cooperation", in particular the
computer simulations in which the routines "decide" ON THEIR OWN that
cooperation is "better".
}simulations cannot produce effects
>> And I am as sure of
>>the statement "Selection can change the frequencies of variants",
>>since I've done computer simulation to test it. That's most
>>of evolutionary theory right there.
>
>Mary, that is very interesting. Could you describe how you modeled selection
>pressure. Any thing that I have seen (i.e., non techinical info) is so
>vague about what selection is that I have no idea how to model it.
>Examples like the light vs dark moths seems too simplistic to me. It shows
>how the number of species (or the amount of variation) can decrease but it
>gives me no hint as to how the number of species can increase.
Directional selection (selection "for" or "against" something) in a static
environment will lose variation. To get a more interesting result, you
can look at either of two things:
1. Selection which is not directional. Here are some examples:
Frequency dependent selection. Forms which are rare are at an advantage.
There are several decent real-world examples of this; female fruit flies
prefer males who look "different", and animals which have immune system
genes different from their neighbors' seem less likely to get
diseases from them.
Heterozygote advantage. The organism with two different forms of the gene
has an advantage over others. The classical example is sickle-cell
anemia in humans, where the person with one sickle and one normal allele
is protected from malaria.
Two kinds of selection pulling in different directions. For example,
females may prefer brightly colored males, but so may predators. Some
values for the parameters here will give a balance of different
forms in the population.
2. Non-static environments. This is much harder to model, but interesting.
You can easily get frequency-dependent selection out of an environment
with two food sources, both subject to overexploitation. Environments
which change over time either randomly or in a cycle can also maintain
variability.
***
The simplest model I know in which something like speciation can be seen
to happen is one that contains two factors:
There is a gene with two variants, and the heterozygote is worse than
either homozygote.
There is the possibility for evolving reproductive isolation based on the
first gene.
Reproductive isolation could be modeled in several ways. You could
explicitly add a gene that controls mate recognition. You could arrange
your simulated organisms on a grid and restrict most mating to near
neighbors, and see if two populations seperated from an initial mixture.
Don't forget that if you use random rather than strictly proportional
selection (that is, if you use a random number to see who lives
and who dies), population size makes a huge difference. It is almost
impossible to maintain high variability in a tiny population, even
with strong selection.
> Von Neumann clearly chown that more complicated systems cannot come
> from less complicated systems. Information gets downgraded
I got the Scientific American article (September 1964, vol 211) on interlibrary
loan (too early for local holdings) to read Mathematics in the Biological
Sciences. The lead in is:
"Biologists use mathematics, but the complex systems they study resist
mathematical description. The kind of description that might someday
be helpful is suggested by the abstract analysis of self-reproduction."
Note that this was before most of the developments in Chaos Theory, which
does what they are talking about. Most of the examples in the article are
concerned with modeling specific systems (neurons primarily), cellular
automaton (see newsgroup comp.theory.cell-automata) and a couple of other
systems. The relevance to evolution is not brought up until the last
column on the last page. The applicability of the approach at all is
questioned by the author, though the specifics are said to probably be
possible. The last sentence:
"Nobody has yet done the engineering design work required to build such a
machine, but I think it will someday be built."
Not exactly the posture of one "disproving" the concept, is it?
I checked out the Von Neumann book _Theory of Self-Reproducing Automata_
and am currently reading ther fth lecture "Re-evalutation of the Problems
of Complicated Automata - Problems of Hierarchy and Evolution". The third
lecture: "Statistical Theories of Information" brings in the thermodynamics
issues as it related entrophy, enthalpy, and information. A worthwhile
note is that Von Neumann points out that no local system is closed, and that
local increases are easily accomodated by decreases elsewhere.
A major disagreement that I have so far is the difference between the
automata discussed and actual systems.
1. The cellular automata discussed are assumed to be in their final state.
No further increases in complexity are apparently allowed. This is
blatently false in actual systems which continuously grow.
2. The descendants are perfect copies of the parents. In fact, this is one
of Von Neumann's criteria in self-reproduction. In reality, (with the
exception of very few EXTREMELY simple systems) the "child" is nowhere near
as complex as the parent. As a major difference, the child is not capable
of reproduction. Therefore, actual biological systems do not fit within
the Von Neumann's definitions for self-reproducing automata.
These two differences alone can account for evolutionary change without
the need for a parent to produce (directly) a more complex child. The
parent simply produces a LESS complicatd child, which is NOT a replication
of the parent, which then grows to a more complicated system than the
parent. This can be observed happening when a tree produces seeds
(which as-is are incapable of reproduction and are plainly NOT a duplicate
of the tree) which in turn develop of themselves into a grove, which is
more complicated (see Von Neumann's book on how he measures complexity -
the editors introduction covers it in one place with examples as opposed to
across numerous lectures for those in a hurry).
Did you bother to read _Theory of Self-Reproducing Automata_? The
fifth lecture is entitled "Re-Evaluation of the Problems of
Complicated Automata - Problems of Hierarchy and Evolution". After
a good bit of evaluation & discussion Von Neumann writes:
"There is thus this completely decisive property of complexity, that
there exists a critical size below which the process of synthesis
is degenerative, but above which the phenomenon of synthesis, if
properly arranged, can become explosive, in other words, where
synthesis of automata can proceed in such a manner that each automaton
will produce other automata which are more complex and of higher
potentialities than itself."
Further down this same page he discusses why a system of "less than
a dozen kinds of elements are needed.".
That system could come into being other than being constructed by
a system designed to do so. Luck, for instance.
A close comparison with Turing's machine is done on the next page.
And one page further we get what appears to be an analogy to Mary's
definition of life: "it might be quite complicated to construct a
machine which will copy an automata that is given it, and that is preferable
to proceed, not from original to copy, but from verbal description
to copy." This "description" almost appears to be Mary's "language".
Therefore, this entire string is fallous.
First, Von Neumann was not talking about the development of systems like
those we observe (he said that was the case early in the quoted chapter),
and those differences make the development trivial. And it turns out that
EVEN WITH THESE AUTOMATA evolution (once past the simplest stage) is
possible.
Topics:
}No new species (alternately, "kinds") are evolving today.
}Slight variation can't turn one kind into another.
}Just because two animals LOOK similiar does not mean there is "common ancestor
}Mendelian inheritance says that recessive characters reappear
}Hybrids are infertile, so a newly evolved individual couldn't breed.
}The animals couldn't have distributed themselves all over the globe.
}"impossible gulfs"
}The failure of some organisms to evolve at all.
}No new phyla, classes, or orders have appeared.
}The occurrence of parallel evolution, in which similiar structures evolve
}Many species have remained absolutely fixed throughout geologic time.
}A great many modern species are very evident degenerate
}All the great phyla appear quite suddenly in the fossil record.
}Selection cannot change the frequency of variants
----------------------------------------------------------------------
}- No new species (alternately, "kinds") are evolving today.
"Three species of wildflowers called goatsbeards were introduced to the
United States from Europe shortly after the turn of the century. Within
a few decades their populaltions expanded and began to encounter one another
in the American West. Whenever mixed populations occurred, the specied
interbred (hybridizing) producing sterile hybrid offspring. Suddenly, in
the late Fourties two new species of goatsbeard appeared near Pullman,
Washington. Although the new species were similliar in appearance to the
hybrids, they pproduced fertile offspring. The evollutionary proces
had created a separate species that could reproduce but not mate with
the goatsbeard plants from which it had evolved."
The article is on page 22 of the February, 1989 issue of
_Scientific_American_. It's called "A Breed Apart."
It tells about studies conducted on a fruit fly,
Rhagoletis pomonella, that is a parasite of the hawthorn
tree and its fruit, which is commonly called the thorn
apple. About 150 years ago, some of these flies began
infesting apple trees, as well. The flies feed an breed
on either apples or thorn apples, but not both.
There's enough evidence to convince the scientific
investigators that they're witnessing speciation in action.
Note that some of the investigators set out to prove that
speciation was not happening; the evidence convinced them
otherwise.
In 1916, a single pair of wallabies escaped from a zoo in Oahu. They survived
and bred in the wild, and now there is a whole population. They are smaller
and more lightly colored than the Aussie wallabies. They eat Hawaiian plants
that are poisonous to the Aussie wallabies, because they evolved a new liver
enzyme to detoxify them. They can no longer breed with the Australian
wallabies, so they qualify as a new species.
Sources: "Instant Evolution", Science Digest, July 1982
Saladin / Gish debate at Auburn University at Montgomery, 24 March 1984
How can you say that no new species have arisen when dozens of previously
undiscovered species are found each year in Costa Rica alone?
Also, isn't the latest evidence that maize evolved about 4000 years ago?
}- Slight variation can't turn one kind into another. "One lion may be fitter
} than another lion, but ... all his offspring will still be lions."
What is a "kind"?
}Just because two animals LOOK similiar does not mean there is "common
} ancestory"
The interesting point is that, when checked, there IS.
Genetic comparisons reveal (objectively) a kinship where it was before
predicted on evolutionary grounds.
I believe the error rate is less than 1%. What is facinating
about the comparisons of the numbers of genes shared between
species is that when you draw a genetic tree of what species
are related to what, it looks almost identical to the tree
drawn by anthropologists who make their tree based on comparisons
of morphology (humans look more like chimps than turtles therefore
chimps are more closely related). This is the beauty of science that
a hypothesis (relatedness of species) is shown by two completely
differing mechanisms just as the age of artifacts can be
determined by rock layers (those on top are newer) and carbon
and other radioactive dating techniques.
How is this done?
In brief: DNA similarity is measured by mixing fragments of DNA from
the two species and measuring the thermal stability of the resulting
hybrid molecules, which is proportional to the degree of matching.
It can be calibrated by using DNAs of known composition, for example
the genomes of completely sequenced viruses. Accuracy is limited by
the ability to measure the melting temperature and by the slight
difference in stability between A-T base pairs and C-G ones. There
has been heavy theoretical debate (ending in an amazing shouting
match at a meeting last summer, alas--I was there, and it was embarrasing)
about whether the method is accurate enough to resolve the chimp/
human/gorilla trichotomy.
DNA similarity does measure overall composition, and two organisms
could be very different morphologically while still having high DNA
similarity (indeed, chimps and humans are much more dissimilar than
most pairs with the same DNA distance). However, overall composition
is probably a better guide to relatedness than specific genes, which
are likely to be under different selection in humans and chimps.
What is the noise, and what is the signal? "Junk" DNA is the most
useful for determining phylogeny, because it is more likely to
evolve in a gradual time-dependent fashion. Coding and controlling
regions are interesting in that they tell us about the differences.
}- Mendelian inheritance says that recessive characters reappear, and thus we
} should expect humans with characteristics of apes.
They do. Tails, for instance.
And other "ape" traits that happen to also be "human traits".
Like toes, body hair, simian crease (XRHAH@scfvm.gsfc.nasa.gov for
instance),...
This disregards the basic mechenisms of natural selection and
genetics. It makes the wrong assumption that ape-like
characters are recessive and that all of the traits in the
ancestor population are present but usually unexpressed in the
supposed descendant population. Neither idea is true.
}- Hybrids are infertile, so a newly evolved individual couldn't breed.
Hybrids are often not fertile or robust. They may be desirable to
man if man amde, but they may not succeed in an evolutionary
sense.
The premise is incorrect. First, what is meant by "hybrid" is unclear
in this context - is it a hybrid only if it is infertile? And even in
those cases in which the offspring is usually infertile, that is not
always the case. As witnessed the horse and the donkey.
}- There exist "impossible gulfs" between animal/vegetable,
} invertebrate/vertibrate, marine animals/amphibians, amphibians/reptiles,
} reptiles/birds, reptiles/mammals, mammals/humans.
} Eight impossible gulfs:
Impossible to find gulfs.
} 1) Between the living and non-living or dead matter;
This is the abiogenesis debate.
The rest is a taxinomy of man with the similarity argument turned
into the gaps argument. Is the glass half empty or half full?
What is this gulf? I have yet (despite looking and asking many) found it at all,
let alone found it to be an impossible gulf.
The spectrum between clearly living and singular elementary particles
is wide, and not linear (few things really are) but it appears to be
continuous.
}} 2) Between the vegetable and the animal kingdoms;
Animal cells have some similarity with plant cells, and indeed there
are forms, euglena, with cloroplasts and flagellae, that look like
intermediates. Cells from both kingdoms are eukeryots that are distinct from other cell types belonging to at least three other kingdoms.
There are quite a few plant/animals in the same creature. Most microscopic
because a plant doesn't collect enough energy to be mobile in large scale.
But there are plenty of small ones.
What is a euglena? And where do protista & viri fit in here?
} 3) Between the invertebrates and the vertebrates;
The vetebrates are biochemically closest to the echinodermata, and
urochordates. The free swimming soft chord animals are similar to
the sessile forms.
See also sharks and squids.
} 4) Between marine animals and amphibians;
A steady change from fish to lobefined air breathing fish to amphibians with fish like larval stages can be observed in extant species
and in the fossil record.
See also mudpuppies and frogs. An amphibian that never leaves the water is a
marine animal. This gulf is not only impossible, it is non-existant.
} 5) Between amphibians and reptiles;
Amphibians predate reptiles in the fossil record. The development
of the amneonic egg, with shell and the difference in the skin of
extant reptiles and amphibians suggests that the reptilian characters
were adaptaions developed on amphibian ancestors. The time in
the fossil record when the reptiles became important was one when
amphibian habitats were being reduced and when reptiles could have
succeeded on drier continents.
What is this gulf, and what was a dinosaur? (warning: trick question!
Specifically what is the impossible gulf between, for instance, a salmander
and a chamelion?
} 6) Between reptiles and birds;
The ornithischia, with bird-like pelvises appeared before the modern
birds, whch began to appear in Cretaceous time. Intermediates are
known.
} 7) Between reptiles and mammals;
The therapsida in permean time, Mammal-like reptiles appear before
the first mammals, but intermediate forms are known, and a fairly
complete record of the changes in the facial bones between these
reptiles and true mammals is known from Permean time. Does anyone
know if mammalian dentition is documented into this time. Did the
Therapsida have differentialted dentition?
} 8) Between mammals and the human body;
The distinguishing characteristic of living MAMMALS is lactation.
Despite the invention of baby bottles, human females still lactate.
}12) The failure of some organisms to evolve at all.
If it passes the selection filter, no change required. These
organisms are excellently adapted to their particular niche in their
environment. (like sharks: the "perfect eating machine", right?)
Like the brachiopod Lingula, and the cockroach, identifiable through
most of the phanerazoic and still with us. If an organism is well adapted
to a niche it can readily occupy, then why should it evolve?
}- No new phyla, classes, or orders have appeared.
Subsequently to what?
Trees of descent for organisms are drawn by grouping organisms together
based on common features. Twigs which are close together are organisms
which differ only in few and minor respects. Main branches, down at
the bottom of the tree, are groups of organisms that differ in many and
major respects. One of the main premises of evolution is that this
tree is (more or less) proportional to time.
Asking for a phylum to appear today is asking for
a major branch to be up at the tip of the tree--it makes no sense,
considering the way such trees are drawn!
It is perfectly possible that in several million years there will
be recognizable phyla which were just differentiating today, but
there is no way to recognize a "new phylum" in the bud. For example,
modern plants use two different photosynthesis reactions. It is
quite possible that those two groups will eventually be so different
that we will call them seperate phyla, because the two reactions
probably favor different evolutionary pathways. But how can we
know in advance whether or not this will happen? That's what you're
asking for when you want to see a new phylum arise today.
This is just not true. while most of the phyla present today
were present at the beginning of the Cambrian, and their origin is shrouded,
there is enough of a fossil record from the so-called eo-cambrain to suggest
that some of the animals found in Australia are different phyla that became
extinct by the time fossils became abundant. The affinities of several
Cambrian groups is by no means clear, and they might be separate phyla,
such as the archeocyathids. Our phylum, Vetebrata (Chordata), appears
no earlier than Ordovician, and then only the cartilagenous and jawless
fish are known. All the other classes appear later than that.
Vascular plants, and all more advanced plant phyla appear no
earlier than Silurian time.
There are now five kingdoms known, based on their biochemistry and
there are enough precambrain microfossils to document their appearence.
The geochemistry of sediments in Precambrain rocks is understood well enough
to establish when the oxygen level of the biosphere was high enough to
support modern plants and animals, that comprize two of the five kingdoms.
Before this date it can be infered that the Plant and Animal kingdoms did
not exist. I am not faliliar with Precambrain events to fix this date,
1.8 billion years B.P. ?, or to document the micro fossils that might
bear this out.
}- The occurrence of parallel evolution, in which similiar structures evolve
} in quite different circumstances.
If you start with the same ancestor, they can only vary so much. Also, what
he thinks are "different circumstances" are not necessarily so. Physics
has an interesting set of constraints...
}Many species have remained absolutely fixed throughout geologic time.
There are no known examples of organisms that have not evolved
over a period of time and this includes cockroaches, lungfish,
lampreys, sharks, bacteria, and all other organisms that some
people claim are "frozen in time". Some of these species appear
to be morphologically similar to ancestors that lived in the
past but evolution is much more than external appearance. When
the structure of their genes and proteins are examined it becomes
obvious that they have evolved at the molecular level. In fact
the rate of evolution of these species is similar to that of
species whose external appearance has changed more drastically.
It is incorrect to claim that some organisms have not evolved
simply because their external morphology has not changed.
The problem here is that the fossil record only
preserves some parts of an organism. The fact that these parts
have not changed very much doesn't mean that the species has not
evolved.
}A great many modern species are very evident degenerate, rather than
}higher, forms of those found as fossils.
There is no hierarchy to evolution. There is no reason to suppose
that modern organisms should be "higher" than extinct ones. Loss
of a structure is just as much evolution as gain of one. If
Creationists admit that some organisms have become "degenerate"
then they are admitting to evolution.
}All the great phyla appear quite suddenly in the fossil record.
Marvelous. As long as he gets to pick which ones he wants, they do.
Collect the data to support you conclusion. Keep throwing out the
outliers (97% discarded?) till it fits.
}Selection cannot change the frequency of variants
Since evolution is, by definition, a change in the frequency of
genes in a population, then this statement is equivalent to
saying that selection cannot cause evolution. There are many
experiments in the literature that directly demonstrate how
false and ridiculous this statement really is. Perhaps the
easiest examples for the non-biologist are those that involve
human selection, as in breeds of dogs or cattle. In those cases
selection for distinct characteristics has led to populations
with differing frequencies of alleles (variants). Thus selection
has been PROVEN capable of changing the frequency of variants or
alleles in a population and we have every reason to believe that
it did so in the past as well.
Directional selection (selection "for" or "against" something) in a static
environment will lose variation. To get a more interesting result, you
can look at either of two things:
1. Selection which is not directional. Here are some examples:
Frequency dependent selection. Forms which are rare are at an advantage.
There are several decent real-world examples of this; female fruit flies
prefer males who look "different", and animals which have immune system
genes different from their neighbors' seem less likely to get
diseases from them.
Heterozygote advantage. The organism with two different forms of the gene
has an advantage over others. The classical example is sickle-cell
anemia in humans, where the person with one sickle and one normal allele
is protected from malaria.
Two kinds of selection pulling in different directions. For example,
females may prefer brightly colored males, but so may predators. Some
values for the parameters here will give a balance of different
forms in the population.
2. Non-static environments. This is much harder to model, but interesting.
You can easily get frequency-dependent selection out of an environment
with two food sources, both subject to overexploitation. Environments
which change over time either randomly or in a cycle can also maintain
variability.
***
The simplest model I know in which something like speciation can be seen
to happen is one that contains two factors:
There is a gene with two variants, and the heterozygote is worse than
either homozygote.
There is the possibility for evolving reproductive isolation based on the
first gene.
Reproductive isolation could be modeled in several ways. You could
explicitly add a gene that controls mate recognition. You could arrange
your simulated organisms on a grid and restrict most mating to near
neighbors, and see if two populations seperated from an initial mixture.
Don't forget that if you use random rather than strictly proportional
selection (that is, if you use a random number to see who lives
and who dies), population size makes a huge difference. It is almost
impossible to maintain high variability in a tiny population, even
with strong selection.
Topics:
}Life is too complex to have happened by chance.
}Mutations are almost always harmful.
}Mutations rarely occur.
}3000 years was time enough for all languages, religions to develop.
}Complex organs couldn't have arisen from a single mutation
}Evolution doesn't explain the simultaneous origin of two traits
}Mendelian inheritance says that recessive characters reappear
}Hybrids are infertile, so a newly evolved individual couldn't breed.
}Evolution doesn't explain personality, emotion, reason, conscience, etc.
}"No people of English descent are more distantly related..."
}The animals couldn't have distributed themselves all over the globe.
}Vestigial organs
}Embryology
}"impossible gulfs"
}evolution doesn't make sense
}Evolution doesn't explain abiogenesis or how genes are expressed.
}half of the amino acids should be right-handed
}Mathematical probability
}changes calling for numerous coordinated innovations
>The puzzle of how organs, once evolved, come to be lost (degeneration).
}The failure of some organisms to evolve at all.
}No new phyla, classes, or orders have appeared.
}The occurrence of parallel evolution, in which similiar structures evolve
}The existence of long-term trends (orthogenesis).
}Pre-adaptation: Organs appear before they are needed.
}"Overshoot" or evolutionary "momentum" occurs.
}How do organs, once evolved, come to be lost?
}Why did man lose his hair and tail?
}Over-specialization with no adaptive value.
}Can this all be just mutation and natural selection?
}mitochondrial DNA showes that mankind arose from *one* female.
}chaos theory & biology
}The fundamental principle of evolution contradictory to established laws
}There is no evidence of biological life anywhere else in the universe.
}vestigal organs are probably the results of mutational changes
}Embryology offers testimony to a great Designer
}Similiarities are explained as made by the hand of a common Designer.
}All the great phyla appear quite suddenly in the fossil record.
}what is known to be true about evolution?
}Why are men alone so murderous of their own species?
}Misc biblical wonderings...
}Geographic Distribuion of Quadrupeds
}we have never seen any natural processes which result in a complexity increase.
----------------------------------------------------------------------
}- Life is too complex to have happened by chance.
The theory of evolution doesn't say it did happen by chance. This argument
completely ignores natural selection.
Please read:
Life in Darwin's Universe
G. Bylinsky, Omni Sept 79
The Evolution of Ecological Systems
May, Scientific American, Sept 1978
Chemical Evolution and the Origin of Life
Dickerson, Scientific American, Sept 1978
The Evolution of the Earliest Cells
Schopf, Scientific American, Sept 1978
The Evolution of Multicellular Plants and Animals
Valentine, Scientific American, Sept 1978
} Mutations are never benefical
The textbook example of the effects of radiation upon genes is the old
"carnation seeds exposed to radiocobalt". Clearly some of the flowers
produced are prettier than the originals. Therefore, the "never" is
disproved.
}- Mutations are almost always harmful.
Note: "almost". A lot happen in a large population over long times.
}- Mutations rarely occur.
Note: "Rarely". A lot happen in a large population over long times.
} - 3000 years was time enough for all languages, religions to develop.
Actually the premise is false. The Sino-Tibetan family of languages is
distinct from the Indo-European family of languages, which English seems
to have been derived from. Considering how long ago the 50 arguments were
written (was it around 1930?), this ethnocentrism is not surprising.
}- Complex organs couldn't have arisen from a single mutation, and
} just part of the organ is useless. Favorite examples are eyes and
} insect wings.
there have fairly good descriptions, on the net, of how
eyes could have evolved, and of how bird lungs could have
evolved. These were nice rebuttals of the claim that
"it wasn't useful until finished, so it couldn't have got
started".
And how many of these "numerous coordinated innovations" can be caused by
one change? Check out, for instance, the effect of changing the age at
which bone growth stops in human beings.
There *are* semi-venemous snakes, and in fact the
issue was discussed earlier how some snakes "drip" the venomous saliva
while ones with more developed systems "inject" the saliva via hollow
teeth. Whales have semi-legs (ok, so they're not fish). How about the
cooperating jawbones that have slowly become our hearing mechanisms,
seen to be incrementally represented from reptilian jawbones.
The complete developmental flowchart of the nematode worm--what cells
divide to form what other cells all the way from the 1-cell egg to
the thousand-cell adult--has been determined. It contains numerous
examples of repeated tricks that look very much like subroutines.
For example (this is from memory and may not be precise) there is
a patten of a cell dividing twice to form two muscle cells, one
neuron and one cell which dies that occurs dozens of times in the
worm's development, not always in exactly the same situation--
different kinds of nerve cells are produced--but with exactly the
same pattern (that is, it is the most posterior cell which dies,
and so forth).
People often assume that to evolve a new structure requires new
code. In this case at least, however, a new nerve with attendant
muscle fibers could be made (and there are mutants which do this)
just by triggering this subroutine in a cell which normally doesn't
do it.
} The instinct of Animals: proves wisdom of a "higher order".
Again, argument by design. The complexity and specialization of
characters is evidence of a designer, in this view.
Proves that it something stupid is wired in you don't get descendants.
}- Mendelian inheritance says that recessive characters reappear, and thus we
} should expect humans with characteristics of apes.
They do. Tails, for instance.
And other "ape" traits that happen to also be "human traits".
Like toes, body hair,...
This disregards the basic mechenisms of natural selection and
genetics. It makes the wrong assumption that ape-like
characters are recessive and that all of the traits in the
ancestor population are present but usually unexpressed in the
supposed descendant population. Neither idea is true.
}- Hybrids are infertile, so a newly evolved individual couldn't breed.
Hybrids are often not fertile or robust. They may be desirable to
man if man amde, but they may not succeed in an evolutionary
sense.
The premise is incorrect. First, what is meant by "hybrid" is unclear
in this context - is it a hybrid only if it is infertile? And even in
those cases in which the offspring is usually infertile, that is not
always the case. As witnessed the horse and the donkey.
It is not individuals that evolve but populations. A population
evolves by gradual changes in gene frequency until it becomes
a distinct species that is no longer capable of interbreeding
with similar populations that shared a common ancestor. All of
the individuals within the population can mate successfully with
each other so there is no problem with "hybrids". There are quite
a few examples of different populations of the same species which
have trouble interbreeding, in other words the hybrids are not
viable. These populations are evolving and may become separate
species. It is a common mistake to assume that a new species
begins when an individual "mutates" or "evolves" in a single
step - this is simply not how evolution works.
}- Evolution doesn't explain personality, emotions, abstract reason,
} conscience, etc.
Please read:
The Evolution of Behavior
Smith, Scientific American, Sept 1978
Xenopsychology
R. A. Freitas, Analog Apr 81
Directly Interacting Extra-terrestrial Technological Communities
Viewing, JBIS, vol 28, pp 735-755, 1975
Computer Simulation of Cultural Drift: Limits on Interstellar Colonization
Bainbridge, JBIS, vol 37, pp 420-429, 1984
The Improbability of Bahavioural Convergence in Aliens - Behavioural
Implications of Morphology
Coffey, JBIS, vol 38, pp 515-520, 1985
The climatic background to the birth of civilization
Lamb, Advancement of Science vol 25 pp 103 - 120 1968
}- "No people of English descent are more distantly related than thirtieth
} cousin," which doesn't allow enough time for evolution.
Incorrect argument. The island population of Great Britian
might well have interbreeded more than is the case if it
were mixed with the rest of the world's human population, if
you are inclined to believe Davenport's claim at all.
}- The animals couldn't have distributed themselves all over the globe.
This is written at the time Wagener proposed Continebtal Drift
for the first time. He is rejected by the geologists of the day,
but now Plate Tectonics is well accpeted among geologists and
is used to construct paleobiogeography that explains fossil
distrubutions.
The Supercontinent Cycle
Nance, Worsley, & Moody, Scientific American, July 1988
Alfred Wegener and the Hypothesis of Continental Drift
A. Hallam, Scientific American Feb 1975
And like horses (that man transported), camels, pandas, kangaroos,
marsupials,.. In fact, this supports the evolutionary postulates in that
the distribution matches transportation capabilities.
What is more interesting is why are not animals everywhere? If they all
got themselves originated from one place (did this twice, supposidely -
everyone was originally present in Eden for the naming and everything
was together again in the ark) why are not marsupials found everywhere?
Ibid old world vs. new world species.
} Geographic Distribuion of Quadrupeds
Since the creationists (from the biblical account) would have had EVERY animal
in the same place (twice, in fact. Once for the naming in Eden, once again
for the rescue in the arc.) why are the quadrupeds distributed so differently?
There are a number of large animals that are strictly on one continent, unless
somebody moved them (in fairly recent recorded history). They could NOT have
gotten there on their own RECENTLY (evolved there, yes), nor could a selective
extinction removed every individual of the opposite set. Please explain:
New World Only: Old World Only
=============== +============
Sapajous (Monkeys) Horse, zebra
sagoins (monkeys) sheep, goats, antelopes
Opossum wild boar
Cougar, jaguar panther, leopard
Coatis hyena, civet
Stinking weasels porcupine, hedgehog
Agoutis apes, baboons, true monkeys
Armadillos scaley lizard
Ant-Eaters
Sloths
detached species detached species
tapir elephant
Cabiai rhinoceros
Llama hippopotamus
Peccary giraffe
camel
lion
tiger
}- Vestigial organs: "If the perfect organ were better than the rudimentary
} organ, how can man be the 'survival of the fittest'?"
This is the appeal to progress and perfection that biases
alot of thinking about evolution, even by some biologists
of the past. The changes seen are just adaptations of
existing structures, not perfections or progress toward a goal.
Note: "fittest" is not "optimal".
} Embryology: "it is hard to see why the history of the species should
} be repeated by the embryo."
This is similar to the argument used by Bob Bales that it is hard
to see evolution in the fossil or living evidence. The problem
with this claim is that the understanding of what you would
look for comes from first looking at living things, fossils, and
in this case embryos. You must know how to describe these things
in some detail before you can decide if the claims that similar
structures indicate common ancestry, or that embryonic stages
mimic ancestrial forms. "It is hard ", means you haven't looked.
Present an objection based on what all agree is evidence.
That is more a function of his "hard to see" than why it does.
} A staggering speculation: essentially that evolution doesn't make
} sense given the lake of common animals between the major groups.
This doesn't make sense. The "major groups" are definied by human
classifications that often are there for ancestrial reasons that
support evolution (via the "family trees") or are fairly arbitrary
(for instance, by location or discoverer) and make perfect sense.
}- Evolution doesn't explain abiogenesis or how genes are expressed.
To the creationists. And it does explain how to study the unknown,
rather than bowing out.
}- If life arose by chance, half of the amino acids should be right-handed; in
} fact, all are left-handed.
Once the preference for one enantiomer over another gets started in nature,
it is relatively easy to see how this preference is perpetuated. Biological
reactions work much like machines having templates, stamping out the preferred,
and ONLY the preferred configuration generation after generation after generation.
As to how one became initially started, there are many possibilities:
1. Luck. The first one to form just happened to be L, and then the rest
followed.
2. There may be some effect during formation due to coriolis force or the
(hemisphere dependent) magnetic fied (as lightening went DOWN, the effect
may be polarized)
3. Quantitative calculations indicate that the fundamentally left-handed
neutral-weak force with the electromagnetic force could introduce an
energy preference (very slight). Aside from any steric preferences, one
form could be energetically more stable than the other.
William C. McHarris
Professor of Chemistry and of Physics and of
Astronomy at Michigan State University
"Handedness in Nature"
January 1986 Analog
} Mathematical probability: "it is so improbable that one and only
} one species out of 3,0000,000 should develop into man, that it
} certainly was not the case".
Whence the 3,000,000 number, and how is the "improbability" assigned?
Some say inevitable...
If 500 developed into man, how would you tell?
Besides, given the way evolution works, one would dominate and 499 would
have (while developing) be suppressed, quite likely into extinction.
The "less successful" are extinct or in zoos.
}4) The repeated occurrence of changes calling for numerous coordinated
} innovations, both at the level of organs and of complete organisms.
First, how do you determine that "numerous coordinated innovations" are
required? That may merely be your evaluation. For instance, some of the
common examples:
poisonous snakes - fangs & poison glands. A Gila monster has poison
glands with no fangs, and there are snakes with furrowed fangs with
no poison glands.
fish to land animal - legs and lungs. The mudpuppy is a fish without
lungs that goes on the land, and the ceoclanth (sp) has almost legs
with no lungs. And then there is the African Lungfish, the
floridian walking catfish,...
Coral snakes (southern US) don't have a very sophisticated delivery
system - they also chew on their victims to deliver the poison. I'm
not very familiar with the anatomy of a coral snake, but it does not
have the usual "fangs" associated in the popular mind with a poisonous
snake - as I recall there is just a small sac or pore at the base of
what look like ordinary reptilian teeth.
The last time I studied poisonous snakes (some years ago), it was thought
that poison delivery had evolved several times, independently, in snakes.
This was based on differences in toxins and in delivery systems, as well
as its occurance in otherwise distantly related snakes, all of which have
closely similar non-poisonous forms. The delivery systems cover the whole
range from the simple, rather typical, teeth of the coral snake to the
elaborate, retractile, tubular fangs of pit-vipers. Some have slightly
elongate "fangs" with simple grooves on one side, for instance. Thus,
we can see almost the entire range of intermediate anatomies in evolving
fangs purely in *living* species. Gap?? What gap? We do not even need
the fossils, which we also have.
And how many of these "numerous coordinated innovations" can be caused by
one change? Check out, for instance, the effect of changing the age at
which bone growth stops in human beings.
This needs to be elaborated. If a genome is being stressed to some
metastable level where its states can multiply, then rapid changes to more
than one structure in the organism can occur simutaneously.
>11) The puzzle of how organs, once evolved, come to be lost (degeneration).
Evolution operating on the amplification and dimminution of structures
is well known. The appearence of vestigal structures, at all, reflects on
the use of prexisting developmental pathways, rather than on the purposefulnessor efficiency of the process.
}- The speed at which evolution occurred varies.
Why is that a problem? You change the mutation rate and the selection rate
and the change rate also alteres.
}12) The failure of some organisms to evolve at all.
There are no known examples of organisms that have not evolved
over a period of time and this includes cockroaches, lungfish,
lampreys, sharks, bacteria, and all other organisms that some
people claim are "frozen in time". Some of these species appear
to be morphologically similar to ancestors that lived in the
past but evolution is much more than external appearance. When
the structure of their genes and proteins are examined it becomes
obvious that they have evolved at the molecular level. In fact
the rate of evolution of these species is similar to that of
species whose external appearance has changed more drastically.
It is incorrect to claim that some organisms have not evolved
simply because their external morphology has not changed.
}- The existence of long-term trends (orthogenesis).
So? Study any climatology? The environment has some VERY long-term
trends.
}- Pre-adaptation: Organs appear before they are needed.
Now, how do you tell this???
}- "Overshoot" or evolutionary "momentum" occurs.
A not uncommon problem with non-linear search routines, and with systems
with very long delay times in the feebdack.
}- How do organs, once evolved, come to be lost?
"Use it or lose it" is a popular expression which may help the understanding.
Maintaining something is a drain on materials and energy. Selection would go
against a disadvantageous drain.
} Why did man lose his hair and tail?
Note that hair and tails ARE still present. The selection
process is a statistical phenomena.
There is a theory that sometime within Man's evolutionary past he had an
aquatic phase. This is upheld by:
a. The layer of fat beneith the skin is more characteristic of
marine mammals.
b. The pattern described by the hair remaining on the body describes
fairly closely what would be a flow pattern. Also, the pattern of
denser hair (top of head, chin, pubic region) matches the marine
growth areas
c. Humans have a diving reflex like that of the semi-aquatic mammals
that live in cold climates. When the face hits cold water, the
entire metabolism slows and the interior distribution of the blood
flows. This has been observed in numerous near-drownings in cold
water (it doesn't seem to cut in on warm water).
Thus, we have the same amount of hair (almost) as any other marine mammal.
And for the exact same reasons. We just didn't have a long enough marine
phase for further adaptions (lose arms & legs).
}- Over-specialization with no adaptive value.
How do you determine this?
Besides, most nonlinear search routines I am familiar with have a tendency
to overshoot...
The process is not particularly efficient or purposeful.
}Can this all be just mutation and natural selection?
Two points: first, although Darwin invoked only variation and selection,
modern evolutionary theory also gives a very important role to genetic
drift, the occurance of changes due to chance fluctuations in small
populations. This force can work in the opposite direction than
selection, and can override selection if the population is small enough.
(Brown mice do better in the wild than white, but if I start with
only two of each in an area I will end up with only whites some of
the time.)
Second, "mutation" can cover some things which are much more
powerful than single changes in genes--specifically duplication
of genes and merging of two genes into a new one. These mechanisms
can produce new yet highly non-random genes.
}the scientific discovery (not creationtific discovery) a few years
}back that mitochondrial DNA was identical in all people of various
}ancestory >and thus showed that mankind arose from *one* female.
First, mitochondrial DNA is NOT identical in all humans. However
the differences can be used to construct a family tree of sorts,
and the most reasonable interpretation of the data is that all
modern humans inherited their mitochondria from one woman, dubbed
Eve (possibly to bait creationists), who lived (I think) around
200 Kyears ago.
(The mutation rate observed for the mitochondrial DNA was used to establish
the times involved.)
Second, the fact that the mitochondria of all of us can be traced
to one woman does not mean we arose solely from her-- it just
means that she's one of our common ancestors.
The maternal inheritance of mitochondria is analogous to the
inheritance of last names in our paternalistic society.
The point is, there may have been many contemporaries of "Eve" who
are also common ancestors of ours-- she just happens to be at the
node of our common maternal line. If a consistant paternalistic
society had existed throughout human history, (and nobody ever
changed their names) we would probably all have the same last name;
this would not mean that the first man to have this name was solely
responsible for the human race, just that he would be at the node
of our common paternal line.
> As far as the brain obeying certain chaotic processes, the
> brain is too structured and controlled to allow anything
> like that to occur. Biological processes are very closely
> controlled in the body and in the brain. That is necessary
> for survival. Reflexes are something the brain cannot
> control. Your heart beats regularly and you breathe in your
> sleep. Your brain releases hormones at just the right moment
> to allow you to run away from a lion, or, when cornered,
> fight off an attacker with more strength than you thought you
> had. When you consider the mind as it is usually defined
> (the thinking, conscious part of the brain), it must also
> function properly at all times, or you would not be able
> to survive. Evolutionary pressures would not favor a mind
> which works on a process based on chaos theory.
The connection of chaos with complex real living systems is circumstancial,
but suggestive. I do not have a firm demonstration that full-blown living
processes are adeqately described by systems of nonlinear differential
equations. Two examples I have heard about, I do not have references, are
human brain waves can be modeled with a strange attractor, and a good
model of cardiac electrical function and sudden failure has been built
using chaos.
}The fundamental principle of evolution - the concept of development, with
}increasing organization and complexity - seems to be essentially
}contradictory to the impregnably established laws of energy conservation
}and deterioration.
huh? If by "development" he means adaption to the environment I have no
idea what "increasing organization and complexity" is fundamental for.
And maybe by "deterioration" he means "entrophy or enthalpy"?
}There is not the slightest genuine evidence of biological life as we
}understand it anywhere else in the universe.
There are a LOT of complex chemicals of extraterrestrial origins composed
of carbon, hydrogen, oxygen, and I think even a bit of sulfur. And the
Viking has found some odd reactions. And if you don't mind taking
environmental conditions more alien than mars as "elsewhere", I have seen
some dandy pictures of things that sure look like life in eternal
blackness, no oxygen, hotter than a pot of boiling water,...
}vestigal organs are probably the results of mutational changes which, as
}we have seen, are usually deteriorations.
Also know as "adaptions", right? Thanks. Whale legs are definitely an
adaption to their current environment. Thank-you.
}Embryology, instead of supporting evolution, actually
}offers abundant testimony to a great Designer and does not in any way
}give countenance to theories of materialistic origin and development.
How odd... Same data, different conclusion.
}Similiarities (embryology & comparative anatomy) are more reasonably
}explained in terms of origin at the hand of a common Designer.
An odd definition of "reasonable"...
}what is known to be true about evolution?
I am not sure what you mean by "KNOW". None of this is divine
revelation. But I am as sure about the statement "There is
plentiful genetic variation in natural populations", having
worked first-hand with the data supporting it, as I am of
just about anything else in the world. And I am as sure of
the statement "Selection can change the frequencies of variants",
since I've done computer simulation to test it. That's most
of evolutionary theory right there.
}Why are men alone so murderous of their own species?
We are not alone. Most social animals seem to have some similiar sorts
of behaviors. When a male baboon displaces the old dominant male, young
baboons must watch their ass, as the new dominant male will often attempt
to kill them.
The same thing happens with lions, I believe.
}we have never seen any natural processes which result in a complexity increase.
This is easy. Are you familiar with a small creature called a "Volvox"?
This is a small spherical animal that lives in the water and is made up
of individual cells of algae.
Separate algae cells have been observed organizing into a Volvox, with
the advantage of being able to propel itself in a way similar to an
octopus, and capture food inside the sphere. The algae cells operate in
a unified manner, just as the cells in a larger organism do.
Here is a clear example of increased complexity for the sake of
survival. Since mutation is factual (i.e. we have observed mutation, so
it is not conjecture), why do you find it so hard to believe that
increasingly complex organizations of cells, combined with favorable
mutations, can result in a higher form of life?
I have a biological example. The cat in my house has a pair of extra toes
growing inward on both of its forepaws. This is not unknown, and I
have seen it before. Even more interesting, I have seen the cat use those
extra toes as a human would use a thumb to grip small objects, such as
a penny, in a manner that a cat with ordinary forepaws could not.
A new part, adapted from an old part that all others
of the species has. A new ability that others of the species doesn't have.
An increase in complexity in a biological context.
jap2_ss@uhura.cc.rochester.edu
Topics:
}There are gaps in fossil record
}Methods of dating the earth are inaccurate.
}K-Ar dating of Hawaiian lava is wildly inaccurate.
}Erosion should've dumped at least 30 times more sediment in the sea.
}Top soil
}Mississippi delta would have formed in 5000 years.
}Niagara Falls-the rim is wearing back
}Deterioration of earth's magnetic field
}Not enough dissolved minerals in oceans.
}Other "geological clocks" that suggest a "young" earth
}Polonium halos
}The animals couldn't have distributed themselves all over the globe.
}Lewis Overthrust, Northern Montana, Glacier Nat'l Monument.
}Heart Mountain, north of Cody WY
}Unexplained by uniformitarian model on which the evolutionary model is based
}A near planetary collision
}Shifting the poles rapidly over Hapgood's waveguide zone
}"carcasses deposited in icy mucky dumps"
}evidence of rapid removal and deposition of soil, forest in arctic.
} the are no layers which require more than 6000 years to build up
}no more fossils being made
} folded rocks show that it was done when they were soft
----------------------------------------------------------------------------
}- There are gaps in fossil record where you'd expect intermediate forms.
There are more fossils than Creationists will admit. Many intermediate forms
are known--for example, the development of the mammal skull characteristics
from the therapsida of Permian time.
What gaps remain can be explained by erosion, lack of proper conditions
for fossilization, the punctuated equilibrium model, or simply not looking in
the right places yet.
}- Methods of dating the earth are inaccurate.
Exactly what is meant by "inaccurate" leaves much to be desired.
Please see the August 1989 Scientific American article on the Age
of the Earth. (page 90, by Lawrence Badash, "The Age-of-the-Earth
Debate")
In an abstract from _Nature_, Vol. 341, p. 518 (12 October 1987).
"Direct dating of Phanerozoic sediments by the 238U-206Pb
method," by Patrick E. Smith & Ronald M. Farquhar, Geophysics
Laboratory, Department of Physics, University of Toronto,
Ontario, Toronto, Canada M5S 1A7
"Direct radiometric age determination of Phanerozoic carbonates
has been a long-standing problem in geochronology. Rb-Sr and
K-Ar dating schemes, commonly used to constrain the chronology
of Phanerozoic sediments, have so far proved to be unsuccessful
in dating these rocks because of their poor enrichment in radiogenic
87Sr and 40Ar and also because of analytical difficulties. Recent
studies have demonstrated that large amounts of radiogenic Pb
exist in some carbonates and that they could be dated by the
Pb-Pb method. However, the precision of this method is severely
limited to samples having very high uranium to lead ratios because
by the beginning of the Phanerozoic (~590 Myr ago) 98% of 235U
originally present in the Earth had decayed to 207Pb. Here we
report the first isochron age of carbonates using the 238U-206Pb
method on corals. This method, which gives good accuracy even
for low U concentrations, has great potential for the direct dating
of sedimentary sequences and should be valuable for refining the
Phanerozoic timescale."
} - K-Ar dating of Hawaiian lava is wildly inaccurate.
That's why geologists don't pay much attention to analyses of rock
samples unless their geological context is well understood. Since
Hawaii is built on oceanic crust that is about 80-100 million years old
(the age is known more precisely than this; I don't have the references
handy), it was immediately obvious that the observed isotopic ratios
didn't represent the ages of the rocks.
Our confidence in radiometric dating techniques comes from years of
careful comparisons to other radiometric techniques and to relative
age determinations from biostratigraphy (fossils in layered rocks).
In some cases, there are multiple isotope systems that may be analyzed
in the same sample. Since these different systems react differently
to the processes that disturb age recording, if the systems disagree
with one another the age significance of the data is suspect.
Geoscientists try to use all available tools in combination to make
sure that they're not fooled by a single spurious analysis. In
some journals, analytical results aren't publishable unless they're
backed up by field relations and/or by other analytical methods.
The particular case of young Hawaiian volcanic rocks is interesting for
reasons other than the absurd age interpretations. Since these rocks
are very poor in the potassium from which radiogenic argon decays,
their argon content is determined largely by the composition of the
argon in the rocks from which the Hawaii lavas were derived. The data
tell us something about the composition of the mantle down to
about 150 kilometers below the surface, where earthquake data tell us
the lavas originate.
The example of the Hawaii rocks is a Red Herring, as I will demonstrate
momentarily. However, the answer to your last question is very simple. If
you can date a rock by a number of different methods, involving different
decay series, and if you arrive at the SAME AGE using any of a half-dozen
different and completely independent methods, then you can be quite
confident that the age you have measured is reliable.
If you wish to dispute these ages, you have to come up with EVIDENCE that
they are unreliable. It is not sufficient to wave your hands and express
your skepticism. We all know you are skeptical, but saying "how do we
know," without EVIDENCE to suggest that there is a problem, is just
whistling past the graveyard.
And now for the Red Herring. Creationists often bring up the example of
the Hawaiian pillow basalts with anomalous K-Ar ages, but they neglect to
mention that geologists _already thought_ that rocks formed under THESE
PARTICULAR conditions would give unreliable K-Ar ages because they would
trap argon before it can escape. The studies in question were performed
to confirm this under controlled conditions, and thus to confirm to the
scientific community that THIS PARTICULAR type of rock is unsuitable for
radiometric dating. The misuse of this work by Creationists is
particularly despicable, IMHO.
} - Erosion should've dumped at least 30 times more sediment in the sea.
}and all the continents would be worn to sea
}level in just 14,000,000 years.
Ever heard of plate tectonics?
Please read:
On Volcanism and Thermal Tectonics on one-plate Planets
Solomon, Geophysical Research Letters, vol 5, no 6 June 1978
The Supercontinent Cycle
Nance, Worsley, & Moody, Scientific American, July 1988
} - Top soil--6 inches form in 5,000-20,000 years, but earth averages 7 to 8
} inches.
Or erosion.
Your county Soil Conservation Board will be happy to tell you why your
topsoil is getting shallower, and what you can do to curb the problem.
} - Mississippi delta would have formed in 5000 years.
So? You have (given a steady-state system which it is NOT) identified a
possible geographic feature less than 5k years old.
}Niagara Falls-the rim is wearing back at a known rate and taken ~5,000 years
}from its original precipice.
That's neat - and the steady-state assumptions are? And how did you get
the "original precipice" without deciding up front how old you wanted it?
The Niagara River HAS been where it is for only a few millenia (or tens of
millenia). Before that, the whole area was under glacial ice! (And it
some millenia after the ice retreated for the land to reach its present
level and the drainage paths to reach their present alignment.
I'd love to see what happens in the year the falls erode back to Lake Erie!
At the present rate of erosion, I think that's supposed to be ~100,000 AD.
} - Deterioration of earth's magnetic field, at present rates, implies an
} excessive field 10,000 years ago.
The decay is not a steady state (you love this - Morris does, too). In fact,
there is considerable evidence for reversals. The atlantic ocean floor
as it spreads shown the weakening - reversing - strengthening recorded in
its stone as the contenents spread from the mid-atlantic ridge.
The usual creationist assumption behind this extrapolation is that the
decay is exponential, which excludes the possibility of field reversals.
The limited existing measurements cannot yet distinguish between
exponential, linear, or other decay patterns.
The source of the earth's magnetic field remains uncertain. A good
summary of what is known is found in "Ancient Magnetic Reversals: Clues
to the Geodynamo", SCIENTIFIC AMERICAN, May 1988, p. 76-83.
The field is expected to reverse sometime in the next few thousand
years. A time scale on page 78 shows the reversals over the past 170
million years, as deduced from the magnetic patterns in oceanic crust.
I counted about 200 reversals on the chart.
The sun reverses its magnetic field every 11 years in a 22 year cycle.
} - Not enough dissolved minerals in oceans.
dissolved minerals - the stuff moves in cycles, and as such most of the
minerals are very close to their balance levels. Remember "carbon cycle"?
The same general idea holds for everything else. Remember the space shuttle?
Except for the last time, it has been landing on salt. Like from the
oceans, remember?
}Other "geological clocks" that suggest a "young" earth-
}13-16) juvenile water (from volcanoes), oil deposit pressure, Stalactite Growth
}(limestone)
juvenile water is covered in those same computer models, and again nothing
tricky is involved at all.
oil deposites themselves require a time well over 6000 years to exist, so
try again.
stalactite growth - of some, perhaps. You are still identifying merely
temporary features
The formation of the Earth from Planetesimals
Wetherill, Scientific American June 1981
The Steady State of the Earth's crust, atmosphere and oceans
Siever, Scientific American, May 1974
The Evolution of the Atmosphere of the Earth
Hart, Icarus, 33, 23-39, 1978
Evolution of the Atmosphere and Oceans
Holland, Lazar & McCaffery, Nature vol 320, 6 mar 1986
Enhanced CO2 greenhouse to compensate for reduced solar luminosity on early
earth
Owen & Cess, Nature, vol 227, 22Feb 1979
How climate Evolved on the Terrestrial Planets
Kasting, Toon, & Pollack, Scientific American, Feb 1988
Climatic Changes of the last 18,000 years: Observations and Model Simulations
COHMAP members, Science vol 241, 26 Aug 88, p 1043-1052
} - Polonium halos indicate granite-producing magma cooled suddenly, not
} over millions of years.
Gentry's work is of particular importance because it involves actual
field and laboratory work followed up by papers appearing in refereed
scientific journals, offering some credibility to the field of
"creation research."
There is, however, a serious weakness in Gentry's work. It has been
devoted almost entirely to the physics of the polonium halos, thereby
neglecting the geological setting of the samples in which the halos are
found. Because of this neglect, Gentry makes unwarranted generalizations
about the nature of the world's Precambrian rocks.
THE BASIC PREMISE
Polonium halos are small spherical "shells" of radiation damage that
surround radioactive inclusions within certain minerals in rocks, which
Gentry has described in his book "Creation's Tiny Mystery." [1] The halos
are formed by alpha particles released during the decay of an isotope.
As an alpha particle nears the end of its path and slows, it causes
disruption of the crystal structure leaving a small damage track.
Over time, repeated decays from the parent isotope will leave
a spherical halo of discoloration. The distance that an alpha particle
travels depends upon the energy of the decay and that, in turn, is a
function of the particular nuclide that decays. Theoretically, then,
the radii of a series of halos that surround a radioactive inclusion
permit identification of the specific decaying nuclides.
Gentry has claimed that certain of these halos indicate that the
granite "basement rocks" of the earth are "the primordial Genesis rocks"
and were created instantaneously about six thousand years ago.
Essentially, Gentry has found that in certain samples of Precambrian
biotite (a mica) the inner ring halos for uranium and other nuclides
in the decay chain which should be producing Polonium 210, Po214 and
Po218 are missing; only the polonium rings for these three isotopes
are present. In addition, Gentry observed little or no uranium
in the radioactive inclusion. His conclusion is that the polonium
must have been primordial and, because of the short half-lves of
the polonium isotopes (138.4 days , 0.000164 sec. and 3.04 minutes,
respectively), the granite, therefore, must have been created in the
solid state in "only a brief period between 'nucleosynthesis' and
crystallization of the host rock." [1, p. 270]
The fact that Gentry has published in Nature, Science and Medical Opinion
and Review leads one to believe that there is a fair amount of support
for his work, but Gentry avoids making direct creationist statements
in these works -- it seems he is only cautiously trying to link the rocks
of the Precambrian to the rocks that existed right after the Earth's
formation - or creation. His book, however, leaves no doubt on his
position:
"Were tiny polonium halos God's fingerprints in Earth's primordial
rocks? Could it be that the Precambrian granites were the Genesis rocks
of our planet?" [1, p. 32]1
THE GEOLOGY
The first curiosity that Wakefield uncovered was that the sites from
which Gentry obtained his samples were not in the older Archean era of
the Precambrian, as one would expect, but in fact were in the
considerably younger (as dated radiometrically and structurally)
Proterozoic era; specifically, the Proterozoic Grenville Supergroup of
the Grenville Province, here in Ontario. This misunderstanding came
about because Gentry is annoyingly vague on exact sites in his book.
One mine, the Silver Crater Mine, is mentioned specifically, while the
remaining sites are described only as being in Madagascar, New Hampshire
and Norway. This tendency towards vagueness also occurs in his Medical
Opinion and Review article, in which he refers to "the Wolsendorf (Bavaria)
fluorite." [2]
After some research, Wakefield tracked down the three sites, all near
Bancroft in southern Ontario. Regarding the first site, the Fission Mine,
it appeared to Wakefield that this was where Gentry obtained his fluorite
samples and some of his biotite. Gentry denied this, saying they had
come from Germany, but Louis Moyd of the Mational Museum in Ottawa indicated
that samples from the Fission Mine were in fact sent to Gentry. I will
break tradition briefly and quote Wakefield exactly,
"it is clear we are dealing with intrusive calcite vein dikes (rocks
containing mostly the mineral calcite and other minerals, such as mica)
that are small in length and width and cut metasedimentary rocks which
still retain bedding planes. Radioactive minerals abound in this
locality. Percolating water from the hill the deposit occupies is strongly
radioactive and was sold in the 1920s for therapeutic purposes."
The second site, the Silver Crater mine, is related to the Fission mine
and is a calcite intrusive of the same origin. Neither of these mines are
in fact granites, a fact Gentry gets wrong. In addition, while Gentry
claims that "halos occur in many mica samples which have not undergone
metamorphism of any kind," the micas of the Silver Crater were indeed
formed during metamorphism under the load of moderate-depthed overburden,
whch has since been eroded off. Gentry's primordial biotite was in
fact metamorphically derived.
The third site, the Faraday mine, I will touch on only briefly.
Gentry emphasizes that the oddity of the halos is that there is no
uranium or thorium in the nucleus at the center of the polonium halos.
Unfortunately for him, the Faraday pegmatite was mined for uranium --
a total of some four million tons of U(3)O(8) ore were mined for a total
of 7.3 million pounds of uranium oxide until the mine's closure in 1984.
The most common radioactive mineral was uranothorite, hence lots of
uranium and thorium.
Gentry's case rests heavily on a "God-of-the-gaps"
approach to the halos; that is, it requires that there be no acceptable
naturalistic explanation for the halos. Once such an explanation is
found, Gentry's case crumbles. One paper that proposes such a
naturalistic explanation is by N. K. Chaudhuri and R. H. Iyer [3].
I make no pretense about being able to understand the model they
present; perhaps those with the necessary background will help out here.
Gentry also has problems with accuracy in his quotation of other
scientific sources. In one case, Gentry (p. 71) refers to a paper by
N. Feather [4], saying that Feather discusses "clear mica (without any
conduits)," but there is no reference to this in Feather's paper.
In another instance, Gentry quotes Steven Talbott for scientific
support and provides a copy of Talbott's article in the appendices
of his book, but Talbott himself states that he has relied on two
sources for HIS information: phone calls with Gentry and "the available
technical literature", which turns out to be based on Gentry's own articles.
What Gentry has in essence done is to reference himself and attempt
to pass this off as independent corroboration.
[1] Gentry, R.V., 1986. Creation's Tiny Mystery. Knoxville, Tenn.
Earth Science Associates.
[2] Gentry, R.V., 1967. "Cosmology and the Earth's Invisible Realm."
Medical Opinion and Review. October, p. 79.
[3] N.K. Chaudhuri and R.H. Iyer, "Origin of Unusual Radioactive Halos,"
Radiation Effects, 1980, vol. 53, pp. 1-6.
[4] N. Feather, "The unsolved problem of the Po-halos in Precambrian biotite
and other old minerals," Comm. to the Royal Soc. of Edinburgh,
no. 11, 1978.
And for a more recent:
In the 6 October 1989 issue of SCIENCE magazine (Vol 246, #1 pp 107-109),
there is a report on work with Radiation Induced Color Halos (RICHs) in
quartz, suggesting a mechanism for the "Po halos" that removes their utility
as Creation Science evidence.
The abstract and first two-and-a-half and last one paragraphs of the report,
giving a summary of the problem and the authors' conclusion:
ABSTRACT
"The radii of radiation-induced color halos (RICHs) surrounding
radioactive mineral inclusions in mica generally correspond closely to
the calculated range of common uranogenic and thorogenic alpha particles in
mica. Many exceptions are known, however, and these variants have led
investigators to some rather exotic interpretations. Three RICHs found
in quartz are identified as aluminum hole-trapping centers. Whereas the
inner radii of these RICHs closely match the predicted range of the most
energetic common alphas (39 micrometers), the color centers observed
extend to 100 micrometers. Migration of valence-band holes down
a radiation-induced charge potential might account for these enigmatic
RICHs. Such RICHs provide natural experiments in ultraslow charge diffusion.
"In 1907 Joly pointed out that microscopic color halos commonly observed
surrounding small inclusions of radioactive minerals were caused by damage
produced by alpha particles emanating from the inclusions. Shortly afterwards,
Rutherford noted a close correspondence between the radial size of halos and
the energies of the alpha particles. A number of workers have described
and measured these radiation-induced color halos (RICHs) and, from their
sizes, have tried to match them with specific radionuclides in the inclusions.
Although it seems possible to relate the sizes of most of the described halos
to alpha emitters in the U and Th decay chains, there are many exceptions.
Particularly controversial have been two (perhaps artificial) classes of
RICHs referred to as Po halos and giant halos.
"The Po haloes are RICHs that have a size and ring structure apparently
comparable with the range in silicate minerals of alpha particles emmited
by uranogenic Po radioisotopes of mass 210, 214, and 218, although this
interpretation has been challenged. Significantly, rings that can be
attributed to the other five alpha decays in the 238-U seroes seem to be
lacking. That the half-life of 218-Po is 3 min has not deterred some
investigators from proposing separation of Po from its radioactive progenitors
before its inclusion in minerals. Indeed, Po halos have even been offered
as possible evidence of an instantaneous creation.
"Giant halos are anomalous RICHs that have radii extending more than
approximately 47 um from the edge of the inclusion..."
[Their proposal is that aluminum inclusions can create a semi-conductive
area where beta particles can cause diffusion and discoloration over a
very large area]
"...We strongly suspect...that the sizes and structure of giant and Po
RICHs in mica are also artifacts of radiation-induced conductivity and their
explanation requires neither unknown radioactivity nor an abandonment of
current concepts of geologic time."
}- The animals couldn't have distributed themselves all over the globe.
This is written at the time Wagener proposed Continebtal Drift
for the first time. He is rejected by the geologists of the day,
but now Plate Tectonics is well accpeted among geologists and
is used to construct paleobiogeography that explains fossil
distrubutions.
And like horses (that man transported), camels, pandas, kangaroos,
marsupials,.. In fact, this supports the evolutionary postulates in that
the distribution matches transportation capabilities.
What is more interesting is why are not animals everywhere? If they all
got themselves originated from one place (did this twice, supposidely -
everyone was originally present in Eden for the naming and everything
was together again in the ark) why are not marsupials found everywhere?
Ibid old world vs. new world species.
The Supercontinent Cycle
Nance, Worsley, & Moody, Scientific American, July 1988
Alfred Wegener and the Hypothesis of Continental Drift
A. Hallam, Scientific American Feb 1975
}- In some places older fossils appear above young ones.
} - Lewis Overthrust, Northern Montana, Glacier Nat'l Monument.
}Lewis Overthrust, Northern Montana including Glacier Nat'l Park
}Here inorder to explain the problem of much older fossils superimposed
}on much younger rocks we have a massive sheet of rock 6000 ft+ thick
}and 100+ miles long moving some 65 (or more) miles with no trace of friction
}or distortion... EVEN THOUGH THE ROCKS THEY REST ON ARE CRETACEOUS SHALES
}AND MUDSTONES WHICH WOULD SHOW DISTORTION QUITE EASILY!
In "The Rocks and Fossils of Glacier National Monument", U.S. Geological
Survey Professional Paper 294-K (1959) C. P. Ross and Richard Rezak note:
Most visitors, especially those who stay on the roads, get the
impression that the Belt strata are undisturbed and lie almost
as flat today as they did when deposited in the sea which vanished
so many million years ago. Actually, they are folded, and in
certain places, they are intensely so. From points on and near
the trails in the park, it is possible to observe places where
the Belt series, as revealed in outcrops on ridges, cliffs and
canyon walls, are folded and crumpled almost as intricately as
the soft younger strata in the mountains south of the park and
in the Great Plains adjoining the park to the east.
Ross and Rezak repeatedly show how "crushed and crumpled" the rocks in
the thrust fault are:
The intricate crumpling and crushing in the immediate vicinity
of the main overthrust, visible in localities like that near
Marias Pass, (shown in figure 139), must have taken place when
the heavy overthrust slab was forced over the soft rocks
beneath...
In some places only a single fault surface formed, with crushed
and crumpled soft rocks beneath...
Rocks between these faults were crumpled and crushed in a
variety of ways. In some places the zone in which fracturing
occured was as much as 2000 feet thick; generally it must have
been at least several hundred feet thick.
The statements made by you that there exists "no indication of
friction [?] or structural distortion in either the Lewis thrust
plate or overridded [sic] surface!" and "In order to explain the
stratigraphic imposibility [sic] of such older rocks over younger
rocks thrust model is invoked" (don't they teach grammer at the
Colorado School of Mines?) is misleading at best and an outright lie
at worst. I'm trying to decide if you are ignorant or just plain
dishonest. If you'd like to see photographs of the actual thrust
fault which we are discussing, may I suggest that you examine the
December 1988 issue of the _Geological_Society_of_America Bulletin_?
I'm sure your library receives it. While it is true that the thrust
fault is often described as being "knife sharp" and there is little
structural distortion above and below it, the fault is undoubtably
present. You can walk up to it in places and place your hand on it.
The thrust model, as you put it, was not just invoked without any
supporting evidence. Geologists, unlike creationists, gather data and
use it to support their theories. While the actual mechanics of
overthrusting may still be poorly understood, geologists are making
progress in understanding it (there have been hundreds of papers
published on it).
}Heart Mountain, north of Cody WY
}If you believe that a large block of limestone could be moved uphill
}for that distance without becoming pulverized I have some land in Fl. you
}would be interested in... Or would you be more interested in the Brooklyn
}Bridge?
aka
}Heart Mountain, north of Cody WY
}A huge mountain of Paleozoic limestone setting on top of Eocene/Miocene
}clastics... no indication of friction... no indication of pulverization...
}yet in order to avoid the failure of uniformitarianism geologists predict
}that this "block" of material was broken off from Sunlight Basin and moved
}by the vibration of volcanic eruptions over a 3000 ft. structure (the Dead
}Indian hill block fault) for a distance of over 25 miles.
"in order to avoid the failure of uniformitarianism" is a biased judgement
that does not address the issues, I will ignore it. William G. Pierce
in his article "Heart Mountain and South Fork Detachment Thrusts of Wyoming"
in American Association of Petroleum Geologists Bulletin Vol. 41 (1957),
notes that the level Cambrian strata broke off along a bedding plane,
and slid downhill. The thrust block slid over younger rocks, parts of
the thrust block eroded away, and a volcano finally deposited some debris
over the area where a piece of the block had once stood. The volcanic
debris, not being a part of the original thrust block, never slid.
Pierce also notes that the thrust block strata are often grossly
deformed even when the underlying strata are not. He shows how
the strata from one piece of the thrust block are often sliced across
at a slant, forming an angle with the horizontal strata underlying the
thrust fault.
If you will allow me to quote from Strahler's book _Science and Earth
History_ (Note: Bill Jefferys mentions this book frequently. I advise
everyone who reads this group to run not walk to the library and GET
it. It would be most useful for Bob Bales and Joe Applegate to read
this. Challange to Bob Bales. I will read any creationist book you
wish me to, and post a critique to the net if you will read this book
and post your critique of Strahler. Why do I think Bob won't take up
the challenge?)
>From Chapter 40 page 393:
For reasons as yet undertermined, the entire layer of post-Cambrian
strata simply began to glive as a unit southeastward over a bedding
surface located immediately under the massive Bighorn dolomite
formation of Ordovician age and above the topmost Cambrian formation.
This layer detached itself along a vertical breakaway fracture shown
at the left. Movement was evidently on a very low downgrade, decling
some 650 meters in elevation from the breakaway fracture to the end of
teh bedding slip zone, a horizontal distance of some 50 km. As the
rock sheet traveled, it broke up onto blocks on a sucession of
vertical tension fractures. The blocks thus became separated by open
gaps, in which the bedding plane of gliding (identified as the Heart
Mountain fault) was exposed at the surface. Geologists have applied
the term "tectonic erosion" to the surface exposure of a fault plane
by sliding away of the overlying mass.
End quote.
So it seems 1) it didn`t move uphill as you claim. and
2) there was pulverization of the rocks.
}These just two of the unconformities which are unexplainable by the
}uniformitarian model on which the evolutionary model is based...
But the point is, whenever one small area is undisturbed, its fossils
are found in a very definite order from top to bottom. The fossils
close to the top resemble modern species far more than the fossils
closer to the bottom. When fossils are occasionally found in the
"wrong" order, one finds that the rocks are in disturbed areas like
mountain ranges, where the sediments are being squished up and out
over the surface of the earth like an ice cream bar crushed in a
vice. These mountain sediments show plenty of physical evidence of
overturning and overthrusting that has nothing to do with fossils.
Therefore, geologists who avoid overturned rocks when they determine
the fossil sequence are not commiting circular reasoning.
William Smith, a canal engineer, was the father of modern stratigraphy.
He was the first to notice that the higher rocks consistently had different
fossils than the lower ones did. He was also a creationist, and used
his discovery only to make money, yet the whole of geology today is
based on his discovery.
Geology is self-correcting, so of course, there is always an
infinitessimal chance that it will someday contradict evolution, or
perhaps render evolution a poorer explanation of the evidence than
creationism. It will no doubt take something a bit more serious than
the anomalies Joe mentioned here. We're still waiting.
}A near planetary collision or an asteroid impact could do a lot of geomorphic
}change! And geologically overnight!
yeah, and it would probably kill everything, given the size it would have
to be. see national geographic, june 1989, 'the march toward extinction',
p. 662, especially the chart starting on p. 666.
>Shifting the poles rapidly over Hapgood's waveguide zone would be just as
>effective and fast!
what's wrong with the possibility of shifting them slowly?
} - "carcasses deposited in icy mucky dumps"
} - evidence of rapid removal and deposition of soil, forest in arctic.
}No, the evidence plainly points to the removal of large areas of soil and
}forest along with their rapid deposition and freezing in the artic... now
}what besides a tidal surge of immense proportions would do that... and if
}such a surge wiped the face of Asia and Alaska, why is it unlikely to extend
}it to Mesopotania, where it would have depositied it's debris in the vicinity
}of Ararat!
Severe temperature changes are known to be responsible for great
catastrophic mortalities. Such mortalities are typically associated
with unusually cold spells or severe winters. Severe storms are
also responsible for catastrophic kills and quick seimentary deposition.
During hurricanes and other severe stormes, bottom sediment can be
stirred up to a considerable depth and easily bury animals.
There is absolutely no question that modern day catastrophes are
constantly occuring and that many of these can result in catastrophic
kills and rapid deposition of sediment. In short, fossils and fossil
graveyards are being formed today. You may be correct in assuming that
the evidence of rapid deposition you cite is generally evidence for
some catastrophic mode of formation, but you are incorrect in
assuming that only the Genesis Flood can account for such deposits.
Especially in the face of the great amount of other evidence in
direct conflict with the Genesis Flood hypothesis, evidence of slow
deposition, evidence in coral reef formations, evaporite deposits,
fossil lake deposits, glacial deposits, and desert deposits. When
we look at the sedimentary rock record we find some deposits that bear
evidence of having been formed by moving water and could have been formed
in flood water, but by no means are all rocks like that, in fact there
are a considerable number of formations that could not have formed in
surging flood waters at all.
} the are no layers which require more than 6000 years to build up
- the abyssal plain ?
- the Greenland icecap
- Green River
Plus, at the statellite-measured recession rate of the NA
continent, the Atlantic gets a Real Big age. This is consistent
with the mag stripes alongside the mid-Aatlantic ridge.
} A while back I heard a Southern Baptist preacher declare that
}no more fossils were being formed because the rate of sediment deposition
}today is too slow to capture and preserve anything.
} This, he said, is proof that the flood happened because that
}would have been the only time the rate of sediment deposition would
}have been high enough to make fossils. (I didn't bother to ask him how
}he explained the layering of fossils, but I'm sure he would have used
}some variation of the idea that the larger fossils naturally floated
}to the top and the small ones settled to the bottom.)
There was a bit of wondering going on amongst the dinodiggers on why so many
fossils of a particular type had a specific distribution, especially when
that distribution was of a single kind, large numbers, and not uncommon.
A light flashed when it was realized that herding animals today, when fording
a river, sometimes panic. The stampede occurs IN the river, and many drown.
The distribution of animal bodies downstream appear to be the same as those
dinosaur distributions. Thats one.
Tar pits work quite well today. That's two.
I've seen stuff deposited in marine sediments. That's three.
There are about a dozen cars mostly buried about 9 miles from here where a
parking lot caved in into the drainage ditch/river feeder caved in. I have
little doubt that any small animals in the parking lot went with them. That's
four.
Sedimentation rates look like they are going like gangbusters to me. Look
at the estuaries filling in. Look at the marine channels filling in. You
don't get sedimentary build up on top of hills.
} folded rocks show that it was done when they were soft
}He next stated that when you hit something that's hard, it breaks or
}shatters. These folds are smooth, so it must be that the rock (he
}showed and mentioned sandstone) was still forming from mud, and was
}still soft. This means that the layers formed very rapidly, to still
}be soft (down at the bottom layer) when the whole shebang got
}faulted.
}
}His (inevitable) conclusion: it all formed during Noah's flood.
Rebuttal: nothing "hit" that rock. Conventional geology understands
the strength and brittleness of these things: they can and have been
measured in labs. Note, I'm not saying that rocks of a given type
are identical. The point is that science has dealt with all this
quantitatively. The rocks got folded by compression, not by sudden
impact: and in fact some rocks do shatter. I've seen examples - for
instance, hard black fragments embedded in a softer gray rock. The
gray rock had flowed while the black shattered.
Folding can happen in a lot less than geological time. If you
go to the Roman dig at the Fort at Housesteads, in Northumbria,
you can see the remains of Roman barracks which now lie in definite
waves, because of the movement of the earth beneath them. The
mortar between the stones is still intact.
Topics:
} Oldest living things
}Man and dinosaurs coexisted.
}The suddenness with which major changes
}Many extinctions lack obvious reasons.
} - Oldest living things, bristlecone pines, are younger than 5000 years.
Sure. In fact, if you go for grove instead of individual tree and match
similiar growth rigns (similiar events in overlapping lifespans) it goes
well over 11,000 years.
}- Man and dinosaurs coexisted.
(Creationist Institute of California).
Refuted. Institute discredited and licence (to grant science
degrees) recently revoked.
BTW: Those "footprints" in the Paluxy river bed are NOT human. A simple
observation of the tracks reveal that while an arch is present forward of
the heel, there are only three toes. If a track is observed which is
uneroded, webbing is visible between the toes. A special on NOVA allowed
these tracks to be visible to millions.
Dr. Walter Brown, now director of the Center for Scientific Creation in Phoenix,
AZ.
Brown, may fall back on a rather novel technique that he has employed in the
past -- denying having ever supported the idea. Brown first used
this tactic not long after the Paluxy River tracks were shown conclusively
to be either dinosaur tracks or erosion marks. When asked for his opinion,
Brown claimed that he had NEVER supported the Paluxy River tracks.
However, he was forced to 'fess up when shown the transcript of
a local Ontario TV program, "Speaking |