Vital drive confused as mere accidents

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Article reads: Dr Chapais sees the transition as a series of accidents, each of which let natural selection exploit new opportunities. Early humans began to walk on two legs because it was a more efficient way of getting around than knuckle-walking, the chimps’ method. But that happened to leave the hands free. Now they could gesture, or make tools.

It is the vital master that made natural selection its slave.

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