It seems to me that a small number of quirks in our cognitive and emotional makeup give rise to a substantial proportion of avoidable human misery.298 It also seems to me that a shared inkling of these quirks has made some dents in the toll of violence and has the potential to chip away at much more. Each of our five inner demons comes with a design feature that we have begun to notice and would be wise to acknowledge further. People, especially men, are overconfident in their prospects for success; when they fight each other, the outcome is likely to be bloodier than any of them thought.
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