There are potentially very politically inflammatory issues that could come up if we start talking about genetic variation in intelligence in humans. Modern anth

There are potentially very politically inflammatory issues that could come up if we start talking about genetic variation in intelligence in humans. Modern anthropologists are extremely keen to avoid any semblance of justifying racism. But think about it like this: biological evolution works specifically by exploiting differences within a species. If every member of a species were exactly the same height, there would be no basis on which natural selection can encourage future changes in height. Humans got so much smarter than our primate ancestors specifically because there was a lot of variation in innate intelligence: the human ancestors who were smarter tended to live longer and have more offspring. It would be completely nuts if that process just magically stopped, and humans all suddenly had equal intelligence, and differences in intelligence no longer played any role in reproductive success. That idea is completely counter to everything we know about how evolution works... it didn't happen with height or physical strength or hairiness or baldness or any of our other traits. The only reason to suppose it happened with intelligence or other mental traits is, as I said above, to avoid an inflammatory issue.