To: Ron Stringfellow Oct2993 18:09:24 Subject: Mammallike reptiles Ron Stringfellow, dream
From: Marty Leipzig
To: Ron Stringfellow Oct-29-93 18:09:24
Subject: Mammal-like reptiles
Ron Stringfellow, dreaming of seeing the Great Karroo, said to Marty Leipzig:
RS> Hello god marty,
ML> Well, Ron, in the Therapsids there are animals that are
ML> variously classified as "mammal-like reptiles" or
RS> being classified as mammal like reptiles is not being
RS> classified mammals.
Ron the Obtuse, are you just ignoring the remainder of my
rather extraordinarily descriptive post regarding the Therapsida
and the modes and methods of taxonomy, or is it that you're
just too dense to understand the message?
I'll wager it's the latter.
ML> all classes of vertebrates. To answer your next obvious
ML> question, the vertebrates arose from the Tunicates (like
ML> _Amphioxius_). Next...
RS> Well??? Go on , I'm wanting to see where you slgh's
? Supremely logical godless humans. Fine, fine.
RS> get life from
RS> non-life... next...
Well, Ron the Vacuous, for fear of you ignoring my response (or
you being just too thick to follow a logical argument); here
follows a brief exposition on the question of biopoesis (look
it up, Ronzo, don't expect to be spoon fed on every question).
Biopoesis, or the origination of life on Earth. As evidenced by
abundant evidence, from the fossil record, geology and
laboratory experiments (Urey and Miller, etc.), amino acids and
nucleotide bases, the building blocks of proteins and nucleic
acids, form by natural chemistry under a variety of simulated
primordial Earth conditions. What has yet to be determined is
the exact chemical processes by which these essential organic
ingredients were developed into the first molecules capable of
self-replication, AT WHICH POINT NATURAL SELECTION OR ORGANIC
EVOLUTION COULD BEGIN. (So much for your objection to the fact
that evolution says NOTHING WHATSOEVER about origins and your
continual harping about origins and evolution.)
The early atmosphere of the Earth was quite different than that
today. It was enriched in nitrogen, water vapor, hydrogen and
carbon dioxide (purely geological information here, Ronzo the
Obtuse, read the rocks). There was no free oxygen, as oxygen
was a by-product of early cellular respiration. Life cannot
form today because it would be immediately destroyed by
Life is merely the product, derived from inorganic (non-life,
as you so pejoratively put it) components, over the span of
geologic time, of a step-by-step process, governed by the
natural laws of chemistry, with no particular amino acid
sequence required. The same holds true for nucleic acids. It
did not have to be comprised of any particular nucleotide
sequence, but only had to be SOME sequence, whose probability
of arising over a period of millions of years is unity.
There is a question of the mode of this assembly (believe it or
else, Ronzo, science doesn't profess to have all the answers....
Theories include those built on protobiogenesis experiments
carried out by Sid Fox at the U of Florida (proteinoid
microspheres...want a few references to check this out?), Graham
Cairns-Smith argues for clay mineralogy providing the template
for self-replicating forms (want some references?), B. McKean
argues that abiogenesis may have occurred near deep sea vents
(want some...oh, never mind). Tom Cech and Sid Altman note that
RNA (ribonucleic acid) can act as an enzyme, and as such was
probably the link between prebiotic synthesis and the first
All the evidence supports the view that the precursors of life
arose quite naturally (no god or gods necessary), and that
life's emergence, given millions of years and the whole Earth as
a laboratory was a probable, if not inevitable, event.
So, Ronzoid, what exactly is your problem in understand this?
The same problem that causes you to selectively read only those
messages that don't tax your single synapse?
... As you follow life's highway, you're guided by a yellow streak.
--- Blue Wave/Max v2.12
* Origin: A Little Corner in Time BBS (1:106/113.0)
E-Mail Fredric L. Rice / The Skeptic Tank