Another huge problem is that popular evolutionary psychology completely ignores the effect of gene drift. There are biologists who think that the amount of genetic changes due to gene drift that differentiate us from chimpanzee are roughly the same as the amount of genetic changes due to natural selection.

I'm for example wary to believe that we are really better of because we can't produce vitamin C ourselves anymore. I rather think that we lost the ability because of gene drift than think that we lost it due to natural selection.