alt Hacker NewsDo some eyebrows convey emotion or coincidence? (near bottom of page)
Edit: I'm also curious how much time (thousands of years) for there to be noticeable difference in the capability of the brain like abstract thinking. Language may be the real problem.
> I'm also curious how much time (thousands of years) for there to be noticeable difference in the capability of the brain like abstract thinking.
It's not thousands of years. French Canadians are enriched for some of the same brain-related defects that Ashkenazi Jews can get; we assume for the same reasons.