Q. It appears that migration of humans is an important part of your argument for interbreeding, migration that had to have happened sometime well before we got to 1 A.D. so that one can claim everyone can have Adam and Eve as their genealogical ancestors. Explain please.
A. Turns out there has been massive amounts of mixing between different populations over the last 10,000 years. Almost everywhere we look, we find evidence of mixing. Two good books I recommend on this are Who We Are and How We Got Here and Mapping Human History.
One chapter in my book gives a high level summary of what the evidence shows, and how it impacts my thesis. I’ve written a little more about it after the book came out too.