https://sciencemag.org/news/2019/11/how-early-christian-church-gave-birth-today-s-weird-europeans… (Catholic church banning cousin marriages -> unique success of NW Europe)
https://web.mit.edu/fustflum/documents/papers/AshkenaziIQ.jbiosocsci.pdf… (Ashkenazi Jewish IQ & genetic origins -> extraordinary success in intellectual domains especially at top)
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