The Economist endorses cognitive enhancers:

Many people already use Provigil to cope with night-shift work, jet lag and lack of sleep, and suffer few side-effects. Others use beta-blockers to overcome the anxiety and stress of performance. Scientists use off-label drugs to increase their focus. If that helps them unravel the mysteries of the universe, so much the better. If chemical assistance can help increase the useful human lifespan, the benefits could be huge.

Some worry about the unfair advantage and peer pressure that comes from these drugs. However, millions suffer from untreated but mild memory loss. Is it fair to deny them help? If the shy or the scatterbrained take cognitive enhancers, it is not obvious whether this is levelling their playing field or giving them an unfair advantage. Is it “natural” to prop up the ageing body with a nip and a tuck, but to restrict help for the ageing mind[?]...

Johann Hari's self medication on this stuff is here. My own take here.

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