There was literally zero stated evidence for this in the article. He mentions that intelligence is 'genetically fragile', then promotes the idea that because we

There was literally zero stated evidence for this in the article. He mentions that intelligence is 'genetically fragile', then promotes the idea that because we don't live in hostile environments any more, that those 'fragile genetics' must be going away, and we are therefore less intelligent. Paradoxically, though, this 'Stanford geneticist' seems to be evidence for his own findings.