These denialists fail to grasp the importance of evolutionary adaptions. The more the environment differs from the evolutionary one in some key areas, the more there is need for high general intelligence as people are less well adapted to the environment.
Who could this author be? Someone who doubts that IQs of 50-60 are real for Bushmen on account of their impressive skills at survival in African desert environment. Actually, it's Richard Lynn in his first review of national/ethnic IQs from 1978. http://gen.lib.rus.ec/book/index.php?md5=85575275F1E8B9D1548539975FCAE114 …pic.twitter.com/bvu43Fu2iY
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