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Evolved To Be Random

It’s impossible for anything rational to successfully evolve because the byproduct of being optimally rational and efficient is that you’d be predictable. If you are completely predictable, you’d be dead. The military do not look for the most efficient route from A to B, because the most efficienct route would be the one that’s most heavily guarded. So there is a huge danger in looking at life as if it’s an optimization problem. At some point our psychology has to have evolved to be a bit weird and random and unpredictable, for the simple reason that someone who’s predictable would be deceased.

– Rory Sutherland