And I just found this:
Warning to the WNs at college and university. Recently, there have been purely semantic arguments that have tried to undermine the scientific data showing the superiority of one human race over the other. Anthropologists will argue that all human species have the same brain capacity due to sharing the same environment for millions of years. Fortunately, in about 100000 BC, homo erectus walked out of Africa – what a genius. We still can see how the Africans that stayed behind have not developed proper walking technique as they hunch when they walk, commonly drag their knuckles on the ground, and can be seen in trees regularly (hopefully hanging). On a more serious note, because civilizations arose about 10,000 years ago, many scholars will argue that a fraction of time in the geological scale will have a miniscule effect on the evolution of the brain in the human species. Recent studies prove these anthropologists quite wrong.
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And I kinda agree with the second poster, but that's beside the point.