Sapiens: A Brief History of Humankind by Yuval Noah Harari is a book I've been wanting to read for a while. I read 1493 : Uncovering the New World Columbus Created by Charles C. Mann , which is supposed to be part of the big history genera , from the Big Bang to Present. His point was that at that time, the continents were all connected a way, and made things possible like the pandemic we're going through. When I look at the wikipedia entry I don't see either of their names in the list of people who study it, but I guess they were both popularizers perhaps. Reading the book, I have thought of 3 other works I have read. Clan and the Cave Bear includes sex between Homo Sapiens and Homo Neanderthal, which tips it towards the assimilation theory instead of the wiping out the other versions of humans. Humans are notoriously mean about little differences, it's not hard to imagine wars between competing human species. The other work I thought of was the movie franchise...