How did primitive tribes learn about sanitation? How did they learn that fecal matter near a water supply was bad?

Question

Was everyone just sick all the time? How did they keep everyone from dying?

In: 12

Answer 1

Darwinism. some people were like dogs and liked to eat their own shit. they would die young and not pass down such stupid genes. other people liked to not poop where they eat, those would live more and have more time to pass down those smart genes.