Likewise with race. A NY Times blog writes:
Another two decades on, Immanuel Kant, considered by many to be the greatest philosopher of the modern period, would manage to let slip what is surely the greatest non-sequitur in the history of philosophy: describing a report of something seemingly intelligent that had once been said by an African, Kant dismisses it on the grounds that “this fellow was quite black from head to toe, a clear proof that what he said was stupid.” ...No, this shows how experts can be wrong. Immanuel Kant is considered a great genius, but most of what he said was worthless. As Steve Sailer points out, you can find the science behind racial traits in the same newspaper. The NY Times reports:
Since the mid-20th century no mainstream scientist has considered race a biologically significant category; no scientist believes any longer that “negroid,” “caucasoid” and so on represent real natural kinds or categories.
Gaining a deep insight into human evolution, researchers have identified a mutation in a critical human gene as the source of several distinctive traits that make East Asians different from other races.Yes, race is measurable in terms of genes.
The traits — thicker hair shafts, more sweat glands, characteristically identified teeth and smaller breasts — are the result of a gene mutation that occurred about 35,000 years ago, the researchers have concluded.