Quote:
Originally Posted by albed
Wars are seldom very devastating to a population, historical casuality numbers are almost always vastly exaggerated and civilians often fare worse than soldiers. So I'd flush that theory.
Biotechnology will probably steer human evolution in the future imo. Designer babies for the wealthy at first and then for the middle class as it becomes more affordable.
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Niven's explanation may be flawed or incomplete, but there are likely many reasons why humans no longer evolve by means of natural selection and biotechnology is just one of them. In all cases the new motive forces behind human evolution are social rather than biological in nature.