Earlier quoted context omitted.
That statement doesn't align with what I'd learned studying physical anthropology. That is, Almost all genetic adaptations that have been observed across Homo Sapiens have been environmental physical adaptations. I'm not saying that it's wrong - just that I didn't learn it that way (But, I could have went to college too long ago).
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…
The anthropology Issue the GP mentioned is with this. There is no doubt about the need for nurture, not just nature. The mentioned standard deviation which evolution derives from is a compelling argument for intelligence to come neither just from the nurturing.