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Walking

Overthink

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How Walking Made Us Vulnerable

Human babies can't cling on the way that chimp babies can. This is partly because we don't have hair to latch on to. And so he hypothesizes that human mothers had to develop trust in their companions by saying, for instance, hey, I need to go on the ground and hunt, can you take care of my baby up in the tree while I do that? So he says that this is the origin of trust cooperation, our sense of reciprocation even.

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