Some people can roll their tongue like a tube and some can't. Some people can wiggle their ears and some people can't. And some people can't really understand

Some people can roll their tongue like a tube and some can't. Some people can wiggle their ears and some people can't. And some people can't really understand or perceive other people's intentions and motivations... and some people can do it but not in real time. https://en.wikipedia.org/wiki/Sally%E2%80%93Anne_test https://en.wikipedia.org/wiki/Sally%E2%80%93Anne_test Some people are good at following other people's eye gaze, some are not. And then there is Machiavellian intelligence, which roughly scales with (real) intelligence -- but some people aren't good at it. https://en.wikipedia.org/wiki/Machiavellian_intelligence https://en.wikipedia.org/wiki/Machiavellian_intelligence