I'm curious who is estimating 0.2 million (200k) years. That is not very long ago. As a point of comparison, there are populations of humans who have been genet

I'm curious who is estimating 0.2 million (200k) years. That is not very long ago. As a point of comparison, there are populations of humans who have been genetically isolated for that long (the Khoisan in southern Africa).