You know all that really matters is net reproductive success.
We had a big debate on this here: http://www.twcenter.net/forums/showt...1#post14216552
IQ is highly heritable, the question is really how much.
Or countries where the average IQ is much lower have a lot more poverty and malnutrition, though malnutrition and other factors have to play a role. People have attacked Richard Lynn's data on this because his meta-analysis had some populations in the low 80s, but he had boosted their actual scores by about 20 points to account for malnutrition. Anyway, there are a lot of problems with his work but I don't think his alleged racism is the biggest, but that the issue gets a lot harder to answer to anyone's satisfaction cross-culturally.
I think saying it's useless is woo, but anyway sounds like you may be talking about Richard Lynn. Whether his work is valid or not, you know it's been promoted by plenty of morons and extremists on the net, which sort of obscures the issue.
Yeah, I know he said that, but I don't believe it, not if it was on a descent test. This is from a popular magazine, but I think it assesses the claim well enough:
https://www.psychologytoday.com/blog...inding-anotherFeynman was universally regarded as one of the fastest thinking and most creative theorists in his generation. Yet it has been reported-including by Feynman himself-that he only obtained a score of 125 on a school IQ test. I suspect that this test emphasized verbal, as opposed to mathematical, ability. Feynman received the highest score in the country by a large margin on the notoriously difficult Putnam mathematics competition exam, although he joined the MIT team on short notice and did not prepare for the test. He also reportedly had the highest scores on record on the math/physics graduate admission exams at Princeton. It seems quite possible to me that Feynman's cognitive abilities might have been a bit lopsided-his vocabulary and verbal ability were well above average, but perhaps not as great as his mathematical abilities. I recall looking at excerpts from a notebook Feynman kept while an undergraduate. While the notes covered very advanced topics for an undergraduate-including general relativity and the Dirac equation-it also contained a number of misspellings and grammatical errors. I doubt Feynman cared very much about such things.