Comment by kbelder

This is one of those issues where I think that the experts in the field saying that are just plain wrong. I know how that is a bad assumption to start out with; but I also know that obviously there is an amount of mutations that is beneficial, and organisms with a rate lower than that will be outcompeted. It could be no other way.

So is it just misunderstanding? Maybe they don't understand the question, or we don't understand the answer? Or they're hidebound, or incentivized somehow to be blind to the truth? Epistemological questions abound.