yes, but the fundamental insight here is that human populations didn't stay separate. the human family tree loops back on itself continually, and even if we can identify a point of relative density and homogeneity from which those populations originated, there was still a point later when the species was spread throughout the globe and from which we nevertheless share the same ancestors.
I thought we left Africa around 70k years ago at the latest due to the Toba explosion?
yes, but the fundamental insight here is that human populations didn't stay separate. the human family tree loops back on itself continually, and even if we can identify a point of relative density and homogeneity from which those populations originated, there was still a point later when the species was spread throughout the globe and from which we nevertheless share the same ancestors.
Wow. That is really cool.