A fun thing about cliches is there's often one for both sides of an argument. e.g. birds of a feather flock together Humans tend to treat people as in an "i

A fun thing about cliches is there's often one for both sides of an argument. e.g. birds of a feather flock together Humans tend to treat people as in an "in-group" or "out-group". The troop bands together against another troop. So we have all finds of discrimination, from racism to trivial religious wars over text-editors, languages, and smart-phones. If we don't have a way to define our "in-group", we invent one, like cliques in high school. I think a great invention of modern society is mass-audience sports. This gives us a simulated war to take sides in, but with negligible practical effect on our lives and relationships. IMHO, it's hard to fix bugs in human nature, better to find a workaround.