Why have humans not evolved physically in over 150k years? Why are "common" ancestors the monkeys, still around? The concept that life tends towards more complexity and more efficiency. Survival of the fittest isn't a truism. Competition can drive advancements, but so can co-operation. Besides, the notion that things change is older than Darwin, it's been obvious for a pretty fucking long time, no need to attribute the obvious to a symbolic kike.