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that sapiens originated in Africa can make sense and holds as the data stands, but we are talking about ~300000 years of overall differentiation, and of archaic sapiens, not about the older OOA which posited that all humans descended entirely from a single population living 50000 years ago
at this point I wouldn't necessarily be 100% sure about anatomically modern and most importantly behaviorally modern sapiens
Africans have the most basal variation, yes, but lots of it supposedly comes from those earlier iterations, from >100k years ago, that's a key thing, while Eurasians descend almost exclusively from those highly selected bottlenecked pioneers who managed to push through Eurasia and after intebreeding with locals became adapted to the new environment
it seems Africans themselves have ancestry from this sort of node, but it's the rest which is more "worrying" so to speak, the basal sapiens ancestry, e.g from guys like pic related
