On the Fact that (According to Esteemed Science Writer, Nicholas Wade) There Were No Religious Leaders Among Hunter-Gatherer Groups and Every Member of the Group Was Left to "Communicate" Directly with His or Her God

So, yeah, I guess that at least in this one respect, Man has devolved (the fact that early man had no popes, no David Koreshes, no Muhammeds, no pharaohs, no Jim Joneses, no L. Ron Hubbards, no Bible-thumping buffoons, etc.).