Questioning the Decline of Human Intelligence

Photo by Dan Kassem.

Science still struggles to define, measure or understand intelligence, let alone definitively nail down its genetic components. Yet one Stanford geneticist argues that civilization was a bad move, and that human intelligence has gradually ratcheted down  since leaving its hunter-gatherer days behind.

Is the Peter Principle killing our intellect, or is Crabtree’s model another unripe hypothesis that received too much media attention? Read on to find out.

Did human intelligence peak thousands of years ago?

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