[GSlob]

And how would that person, born only about 3000 years ago, manage to relate to, say, isolated jungle tribes or any other similar group which could claim genetic isolation over mllenia? The claim that the most recent common ancestor is that recent sounds implausible.

[churchillbuff]

One common ancestor? Hmmm. Sounds familiar. Where have I read that before?

[muawiyah]

The Spanish explorers of the 1500s took care of addressing the question of how it would come about that savages in the interior of vast jungles would end up with the same ancestors as the Spanish.

Sailers are reputed to do the same thing eh!

[SunkenCiv]

I wholeheartedly agree.