I haven't seen this [Update: the original article has been removed, but here is the content of that article] described so nicely before. It's been common knowledge among most philosophers of race that our American concept of race has no scientific basis. That doesn't mean there's no reality to race, but it's a social phenomenon, not a scientifically discoverable division within the species. The work on the human genome project has not only confirmed this but given hard numbers to back it up.
Two little bits as a sample:
"Gray wolves split into subspecies, scoring 0.7 on Wright's scale. Even Ozark mountain lizards living on ridges less than a mile apart differ from each other by an Fst score of 0.4. But human groups score only about 0.15 on the statistical scale. That's a worldwide total measuring all human variation. When scientists try to measure differences between only two groups of people, they usually find a lower score, on average about 0.08 -- only 8 percent of the genes examined have more than one allele. The most disparate human groups barely make the 0.25 mark, far below the diversity seen in lizards."
"For instance, the Pygmy people living in Zaire and the Central African Republic, and people from Melanesia, such as people from the island of Fiji, are among the darkest-skinned populations in the world. A racial classification based on skin color would likely group them as members of the same race quite distinct from fair-skinned Europeans. But genetic analysis reveals that both African Pygmies and people from Fiji are more closely related to Europeans than to each other."
Update: I should explain what's going on with the comments on this one. I was involved with a discussion on Kwanzaa at World Magazine's blog. Someone there co-opted the discussion toward some pet issues, basically arguing for a thesis something along the lines of what The Bell Curve is usually used to demonstrate -- that standardized test differences between racial groups are explainable only through genetic predispositions for certain levels of intelligence. (See the Thomas Sowell discussion I linked in the comments for a more balanced view of that book.)
Independently of that discussion, I found this article and thought it relevant to some of my own thoughts on race that I've been posting here, so I posted it on my blog. Then I decided that it would also be relevant to that discussion and posted it there. Instead of continuing the conversation there, the person who had been trolling there rudely decided to continue the discussion here, thus giving readers of my blog absolutely no sense of where this is coming from unless they'd already been following that discussion.
My policy on trolling is that I will address any real arguments that I think are worth discussing, even if the general tone of the message is trolling, as long as I haven't already addressed them. Any posts that are pure trolling will be deleted.