The Fool wrote: > > Didn't native americans cross the land bridge circa 14,000 > years ago, and remained relatively unconnected to other > human populations until circa 1492? > The key word is "relatively". There is no true isolation.
> I'm not buying it. There was no common ancestor as of 2000 ya > or even 3000 ya. > I am - but I think 2000-3000 is too conservative. I would bet that _everybody_ descends from Gengis Khan, who lived less than 1000 ya. The math is too simple: just imagine that "being a descendant of G-K" is a disease, and that the rate of non-infected people gets squared at each generation. Treat semi-isolated groups with care, but once there is contact - a single outsider f---ing a tribe woman - the group will be doomed to be "infected" in a few generations. Alberto Monteiro _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
