Falla asked this question about Sapiens: A Brief History of Humankind:
can you tell me about sapiens?
Duane Is there any analysis in this book, of how Global Freezing or another such catastrophe may have been the determining factor in which "race" survived? …moreIs there any analysis in this book, of how Global Freezing or another such catastrophe may have been the determining factor in which "race" survived? (There is some genetic evidence that mankind at some point was reduced to a population of only a few dozen individuals, which would render nearly insignificant any differences between the surviving and non-surviving races.

Also, what does he use as a determining factor for "Sapient"... e.g. what characteristic distinguishes the difference between "Homo Sapiens" and all of the "Homos" which didn't survive, from the differences among the four "races" we now have, which did survive?(less)
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