When they’re talking 1/2 % differences, is that just another experimental distinction without practical significance?
Perhaps.
OTOH, Europeans and Asians seem to have more initiative than Africans. Odd that that would come from Neanderthaler blood, since the Neanderthals kept the same toolkit for 100,000 years, but there it is.
Who was the FReeper who told the tale of the rope swing in Africa?