Driscoll seems qualified so I'm going to guess the writer garbled what he said.
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Temperament, like size, is massively polygenic--hundreds or thousands of different genes affecting it slightly.pic.twitter.com/UBRazdtFIS
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This is what selection pressure on a polygenic trait can accomplish in a short time. From http://ps.oxfordjournals.org/content/93/12/2970.full.pdf+html …pic.twitter.com/8VRNPXiZx7
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Determining specific genetic factors in this kind of change is hard: small changes in the distribution of many genes. No smoking gun.
End of conversation
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. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.