Funnily enough, our altruism in form of the welfare state and the many looking after those who are less able to care for themselves is actually a huge threat to the ongoing survival of our species.
We're not going to die out because we feed the poor now, instead of allowing them to starve. But certainly evolutionary pressures are much changed now from what they were in the past, to the point that you could argue that human evolution as we know it will 'stop'.
Very true as for evolution to occur, the species needs isolation and for us human that simply isnt possible anymore!
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