It may be that physically weaker or congenitally infirm individuals have no evolutionary disadvantage in the environment of a nurturing culture. This is good for humans, because cultural niches change, which favours increased diversity in the species, spawning ever more nurturing cultures, accelerating the change and survivability of those who at one time may not have survived. Eugenics advocated the improvement of human genetic heritage, but by failing to recognise the power of culture in shaping our evolution, eugenics had it wrong. Culture not only is the key to improving the species and
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