Big brains cause cramped mouths


Evolution isn’t perfect. If it were, we might have wings instead of wisdom teeth. Sometimes useless features stick around in a species simply because they’re not doing much harm. But wisdom teeth weren’t always a cash crop for oral surgeons. Long ago, they served as a useful third set of meat-mashing molars. But as our brains grew our jawbone structure changed, leaving us with expensively overcrowded mouths.


~ by mlmcored on August 10, 2009.

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