The grounds for scientific confidence in the dysgenic effects of Malthusian relaxation are every bit as solid as those for the warming effects of atmospheric carbon dioxide. ...
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Does this factor in that relaxation of childhood mortality also results in the survival of positive variation as well as negative? Dysentry broadly selects hygienic populations but indiscriminately takes out high and low intelligence children.
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Yes, but we have strong inverse correlation between IQ and fertility, so it matters a little.
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