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A comment on Children aren't born smart. They're made smart by conversation. Parent comment

Re:Children aren't born smart. They're made smart by convers... by eli_gottlieb on Wednesday October 02, 2013 @04:12AM (#6481269)
How do we know that there wasn't a binary-like change where one generation didn't have our level of intelligence and the next did, and all humans today are descended from that single change, as opposed to it happening gradually?

Because it's very, very rare for evolution to actually work that way.

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Re:Children aren't born smart. They're made smart by convers... by hrjet on Wednesday October 02, 2013 @06:07AM (#6481575)
Being rare != it didn't happen.

In a sample size of one, statistics is useless.

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