Not sure how Salter is allegedly wrong here: https://www.amazon.com/Genetic-Interests-Ethnicity-Humanity-Migration/dp/1412805961 … https://twitter.com/YeyoZa/status/861879639291162624 …
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But ethnocentric groups do outcompete non-ethnocentric groups, so it seems to me that we have group selection in that way, even without
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altruism
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You assume group selection in the wording. I think the historical evidence shows that less tribal societies are more successful.
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The Roman Empire was multi-ethnic. Islam is not racially or ethnically tribal, although it imposes itself on people that are.
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Ok, good point, we've definitely had selection at times for anti-tribal societies, presumably because they were able to unite larger groups,
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have more trade, and get more advanced tech. Hence European anti-tribalism. This has reversed in recent decades.
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What has changed is that most children live to adulthood, because of abundant resources. Adaptations of the past now maladaptive.
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The West's anti-tribalism isn't a maladaptive strategy. Not having kids is a maladaptive strategy.
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