[agarrett]

So George Bush descended from the Zulus, and Colin Powell from the Teutons. Gee thanks, I woulda never figured it out without your help.

  That's correct, and you're welcome.

  Should you be sarcastic, I point you to the following papers:

Unpublished paper by Dr. Rohde of MIT

NAS Paper by Dr. Ohno (abstract only online)

  Hope that satisfies your interest in the subject. If not, please show your math,

Drew Garrett

[LoneRangerMassachusetts]

I decided to check your revered MIT Dr. Rohde's paper. Here’s an excerpt from the first page.

This study introduces a large-scale, detailed computer model of recent human history which suggests that the common ancestor of everyone alive today very likely lived between 2,000 and 5,000 years ago. Furthermore, the model indicates that nearly everyone living a few thousand years prior to that time is either the ancestor of no one or of all living humans.

Me thinks your doctor is a friend of Al Gore. He casts his hypothesis in extremes much like the Global Warming crowd. Really, a common ancestor of everyone alive could have lived as recently as 2,000 years ago - from the Americas, Europe, Africa, Asia, and Australia.