Thursday, March 6, 2008

Crumbling Paradigm

Suzan Mazur at Scoop reports on an upcoming conference convened to discuss the current ferment in evolutionary biology. It turns out that behind the scenes a lot of biologists are growing increasingly disenchanted with Darwin's theory of natural selection because it doesn't have the explanatory power that it was thought to have a few decades ago.

Here are some excerpts from Mazur's article:

What it amounts to is a gathering of 16 biologists and philosophers of rock star stature - let's call them "the Altenberg 16" - who recognize that the theory of evolution which most practicing biologists accept and which is taught in classrooms today, is inadequate in explaining our existence. It's pre the discovery of DNA, lacks a theory for body form and does not accomodate "other" new phenomena.

A wave of scientists now questions natural selection's relevance, though few will publicly admit it. And with such a fundamental struggle underway, the hurling of slurs such as "looney Marxist hangover", "philosopher" (a scientist who can't get grants anymore), "crackpot", is hardly surprising.

When I asked esteemed Harvard evolutionary geneticist Richard Lewontin in a phone conversation what role natural selection plays in evolution, he said, "Natural selection occurs."

Philosopher Jerry Fodor essentially argues that biologists increasingly see the central story of Darwin as wrong in a way that can't be repaired.

When I called Fodor to discuss his article, he joked that he was now in the Witness Protection Program because he'd been so besieged following its publication ...."all I'm wanting to argue is that whatever the story turns out to be, it's not going to be the selectionist story".

Fodor also told me that "you can't put this stuff in the press because it's an attack on the theory of natural selection" and besides "99.99% of the population have no idea what the theory of natural selection is".

Not all the participants at the conference agree with the sentiments expresswed above, but there is clearly an upheaval taking place among evolutionary thinkers. Scientists don't go looking to replace a paradigm unless there is a sense that the old paradigm is no longer fruitful.

Neither should anyone think that the participants are slouching toward Intelligent design, even though ID proponents have for almost twenty years (and creationists for even longer) been pointing out that Darwinism is an inadequate explanation for biological complexity. The "Altenberg 16" are all metaphysical materialists and any theory with which they supplant Darwinism will be perforce a materialist theory, which is too bad. It just means that in a few years they'll have to have another conference.

HT: Evolution News and Views.

RLC