While all biologists share the assumption that humans are an evolved species, evolutionary psychologists go much further, making the profoundly un-Darwinian assertion that ‘human nature ’, was fixed in the Pleistocene and has not changed since. Their argument is that biological evolution has not been able to keep up with the rate of cultural change, summed up as ‘stone age minds in the twenty-first century’. In making such speculative claims, which deny the inexorable processes of evolution, EP ignores evidence from both archaeology and population genetics. Archaeologists are well aware of how little we know about the social practices of early human societies from the fragmentary records of grave sites.

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