What is it for?

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[–] 16 points 2 years ago

My guess would be it's a side-effect, kind of like pareidolia. Us being extremely social animals, so much that being cast away from the tribe in our hunter-gatherer days would spell certain death, our brains have become extremely attuned to face/emotion recognition and language. So we have a tendency of using words to express ideas, even to ourselves.

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