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Author Topic:   Punctuated equilibrium vs spontaneous generation
Sylas
Member (Idle past 5291 days)
Posts: 766
From: Newcastle, Australia
Joined: 11-17-2002


Message 1 of 54 (85911)
02-12-2004 8:03 PM


From a post in another thread:
Skeptick writes:
Spontaneously? Who said evolution is spontaneous? That is creation.
Stephen J. Gould, I thought. As in punctuated equilibrium. Not the same as spontaneous generation, but I it sure sounded like a closely related spin-off to me. Please correct me if I'm wrong about this.
No problem; and indeed you are incorrect on this one.
The term spontaneous generation is an odd one. Context in the above has been lost; it was originally used here as a reference to the spontaneous generation of feathers in a genomes that codes for scales.
Indeed, that has nothing to do with evolution, or with Gould, or with punctuated equilibrium. Gould has some strong comments on the persistent misrepresentation of his views by various creationist writers. You'll do better to read Gould himself rather than trust what is written about punctuated equilibrium in creationist sources.
Serendipitously, Gould's comments on these misrepresentations refer to feathers!
Here is an extract, taken from this site:
We [Gould and Niles Eldredge] proposed the theory of punctuated equilibrium largely to provide a different explanation for pervasive trends in the fossil record. Trends, we argued, cannot be attributed to gradual transformation within lineages, but must arise from the differential success of certain kind of species. A trend, we argued, is more like climbing a flight of stairs (punctuations and stasis) than rolling up an inclined plane.
Since we proposed punctuated equilibria to explain trends, it is infuriating to be quoted again and again by creationistswhether though design or stupidity, I do not knowas admitting that the fossil record includes no transitional forms. Transitional forms are generally lacking at the species level, but they are abundant between larger groups. Yet a pamphlet entitled Harvard Scientists Agree Evolution is a Hoax states: The facts of punctuated equilibrium which Gould and Eldredgeare forcing Darwinists to swallow fit the picture that Bryan insisted on, and which God revealed to us in the Bible.
Continuing the distortion, several creationists have equated the theory of punctuated equilibrium with a caricature of the beliefs of Richard Goldschmidt, a great early geneticist. Goldschmidt argued, in a famous book published in 1949, that new groups can arise all at once through major mutations. He referred to these suddenly transformed creatures as hopeful monsters. (I am attracted to some aspects of the non-caricatured version, but Goldschmidt’s theory still has nothing to do with punctuated equilibrium) Creationist Luther Sunderland talks of the punctuated equilibrium hopeful monster theory and tells his hopeful readers that it amounts to tacit admission that anti-evolutionists are correct in asserting there is no fossil evidence supporting the theory that all life is connected to a common ancestor. Duane Gish writes, According to Goldschmidt, and now apparently according to Gould, a reptile laid an egg from which the first bird, feathers and all, was produced. Any evolutionist who believed such nonsense would rightly be laughed off the intellectual stage; yet the only theory that could ever envision such a scenario for the origin of birds is creationismwith God acting in the egg.
You can reasonably equate the views of Goldschmidt with spontaneous generation; but not those of Gould.
The talkorigins archive has a good FAQ for those who want to find out more about Punctuated Equilibria.
Cheers -- Sylas

Replies to this message:
 Message 2 by Skeptick, posted 02-12-2004 9:48 PM Sylas has not replied
 Message 3 by Skeptick, posted 02-17-2004 4:07 AM Sylas has not replied
 Message 4 by Brad McFall, posted 02-17-2004 3:13 PM Sylas has not replied

  
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