eli5: with the amount of people on the planet, how do we not come across more doppelgangers?

Question

eli5: with the amount of people on the planet, how do we not come across more doppelgangers?

In: 0

Answer 1

Well, it depends on what you call “Doppleganger”, there are plenty of people who look very similar but arent related.

But the human brain is REALLY good with faces, so good it sees faces where they aren’t (like clouds, or trees, or the front of cars, etc). Since we are social creatures our brain has to be really good with faces to remember who is who.

this means who people have to look very very very similar to trick the brain into thinking they’re the same person.