In order for researchers to properly analyze trait aggression by statistical methods in case-control studies, they must first be aware that aggression is partially entangled with another major personality trait: sanguinity. As far as I know, the concept of such entanglement (where at the level of a family it can be the cause of infertility) is unknown in human genetics. I borrowed the term "entanglement" from quantum theory, where the state of one elementary particle of a pair is linked to the state of the other.
Probably geneticists as a whole are a very highly intelligent group of people. But if you told a hundred geneticists that "Do you know that the basis of human personality rests on two complementary genes that can have a lethal effect, and that these two genes are entangled so that case-control studies can give misleading results when the trait of aggression is studied?"... they would just scratch their heads and would not know what you are talking about.
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