WE WERE VERTICALLY SPECIATING DUE TO GEOGRAPHY, AND NOW WE ARE DEVELOPING CASTES

WE WERE VERTICALLY SPECIATING DUE TO GEOGRAPHY, AND NOW WE ARE DEVELOPING CASTES: HORIZONTALLY SPECIATING DUE TO ABILITIES

—“every major group of humans today (major = numerous) is the product of fusions of branches of the human race which were sharply diverged during the Pleistocene. The genomes of individuals and peoples then represent a complex and reticulated graph of interlaced histories. Reducing them to branching trees obscures rather than illuminates.”—