Originally Posted by Gibonius
Well, that's the point about using "race" to describe trends. The bins are too big. Saying "blacks" describes everybody from Brazilians to Burundians to bushmen. That's a huge grouping of people, and there's no obvious reason why they'd share traits other than skin color.
If you're just saying that the traditional definition of race is imperfect, you won't get argument from me. But so what?
As to the argument that subsaharan Africans wouldn't share traits with each other, how about 60,000 years of isolation from everyone else. How about not interbreeding with neanderthals? Not being subject to repeated population bottlenecks caused by the harsher environment--the tropical sunlight that makes them black also makes it warmer. No ice ages? Not interbreeding with neanderthals? Human influences -- farming, cities, disease, war? Culture and aesthetic preferences? Tropical diseases?
If anything it's surprising how similar we all are.