Societies would _not_ be better off if everyone were like Mr Spock, all rationality and no emotion. Instead, a balance – a teaming up of the internal rivals – is optimal for brains. … Some balance of the emotional and rational systems is needed, and that balance may already be optimized by natural selection in human brains.

Societies would _not_ be better off if everyone were like Mr Spock, all rationality and no emotion. Instead, a balance – a teaming up of the internal rivals – is optimal for brains. … Some balance of the emotional and rational systems is needed, and that balance may already be optimized by natural selection in human brains.

– David Eagleman –

Incognito: The Secret Lives of the Brain

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