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He's complaining about making racist statements based on pseudoscience, not science.
In the tweet I was responding to he was complaining that it has "sinister" consequences. That's not any sort of demonstration that it is false, it only betrays his highly biased approach to the subject.
He said sinister agenda, which is different. He has published some papers about the subject (i. e., about psychometrics being a pseudoscientific construct) and, as far as I know, no one has refuted them properly.
Well, worrying about a sinister agenda rather strongly suggests that he is worried about sinister consequences. Besides that it is also a malicious and fraudulent ad hominem attack against people who love the truth, but I ignored that aspect of it.
Read about Francis Galston and the eugenic origin of psychometric correlation. Then decide who is biased.
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