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Why did humans evolve such large brains? Because smarter people have more friends

03:57 EDT 20 Jun 2017 | Medical Xpress

Humans are the only ultrasocial creature on the planet. We have outcompeted, interbred or even killed off all other hominin species. We cohabit in cities of tens of millions of people and, despite what the media tell us, violence between individuals is extremely rare. This is because we have an extremely large, flexible and complex "social brain".

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