These are excerpts and elaborations from my book "The Nature of Consciousness"
The opposite kind of
anti-Darwinist critique was advanced by John Cairns who discovered "adaptive
evolution" (“The origin of mutants”, 1988): some bacteria can mutate very
quickly, way too quickly for Darwin's theory to be true. If all genes mutated at that pace, they would
mostly produce mutations that cannot survive. What drives evolution is natural
selection, which prunes each generation of mutations. But natural selection
does not have the time to operate on the very rapid mutations of these
bacteria. There must be another force at work that "selects" only the
mutations that are useful for survival. Cairns speculated that bacteria must be
somehow able to choose which mutations to undergo in order to adapt to
challenging environments. The idea of evolution driven by “directed mass
mutations” had been pioneered in the 1920s by the Russian geographer Lev Berg,
a fierce anti-Darwinian. Back to the beginning of the chapter "The Evolution of Life: Of Designers and Design" | Back to the index of all chapters |