Another month, another rationality quotes thread. The rules are:
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Pardon my ignorance, but all the "intellect realism" theories seem like they can be charitably paraphrased as group X:
I've seen claimed IQ means in the 80s for black Americans. Observationally, American public life includes many black people for whom I find it implausible that they aren't pretty smart - eg Clarence Thomas, Colin Powell, Condeleeza Rice.
If I assume no difference in std dev or skew in intelligence distribution, it seems to me that I observe too many intelligent black folks for the mean to be in the 80s. Moreover, adding an assumption that std dev is lower doesn't help - now the successful black folk are explained, but I don't observe enough extreme low IQ folk.
That's why I conclude some error exists in the assumption of an 80s mean IQ.
Clarence Thomas is widely considered one of the worst Supreme Court justices in memory, and is famously uninvolved, going years without a question; he has also written harshly about how he feels affirmative action cheapened his degrees. Colin Powell's parents are both Jamaican immigrants, similar to Malcolm Gladwell or Barack Obama whose father was African, highlighting how select and successful African immigrants are. Condoleezza Rice, amusingly enough, is almost as white as Obama is (which given the la... (read more)