ye110man wrote:
same goes for physical ability but we openly accept that some races are generally better than others in that area.
As for physical ability, there can be seen biased probability distribution of becoming a performer: E.g.,
White swimmers are often found rather than those contained in other ethnic groups.
Black runners are very prominent in the short tracks.
Mental ability is not a simple thing. It often depends on human relations where the individual is placed as well.