Human enhancement is now being driven by military imperatives, at least in the US, because civilian society is more conservative in its approach. It’s a missed opportunity for a society-wide push to understand and reduce our need to power the brain down for hours every day. Every hour we sleep is an hour we are not working, finding mates, or teaching our children; if sleep does not have a vital adaptive function to pay for its staggering opportunity cost, it could be ‘the greatest mistake the evolutionary process ever made’.
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