Life cannot evolve until it exists. When I recently made that point during a series of questions I asked in another post, Dr. Benoit Leblanc responded by writing, Your fourth question is the least contentious one, because it deals with matters that lie outside of evolutionary biology. “Until life exists, how can it evolve?” The answer is, of course, “it can’t”. Evolutionary theory is not concerned with abiogenesis, although its principles do apply to the evolution of increasingly-efficient unliving replicators (such as self-replicating nucleic acids) that may, in time, acquire characteristics that we associate with living creatures. Such is the power of the natural selection concept: in a population of replicators that can accumulate mutations, the replicators that gain a replicative advantage will, by definition, replicate better. To his credit, Dr. Leblanc made the effort to respond, though he conceded my point while simultaneously suggesting he and his colleagues don't care that the spontaneous origin of life was a wildly improbable anomaly, at best With all due respect and while I’m sure Dr. Leblanc is considerably more knowledgeable about evolutionary biology than me, I cannot begin to fathom how he could possibly make the statement that evolution theorists could be completely unconcerned about the hypothesis called abiogenesis while simultaneously agreeing with Dr. Coyne's assertion that evolution theory is true, beyond any question or reproach. Quid est veritas? What is the purpose of studying science? Is it to cherry-pick from the evidence that … [Read more...]