I tend to think rainforests are the most “prosperous” environments. Very diverse… but also savage.
But I don’t think skin color really compares here. More like a community where there are diverse supportive skills.
And you can’t have a community where everyone speaks different languages…
Japan is homogenous. And very impressive in so many ways… but I think a Japanese fisherman there may relate more to some Greek guy than to a banker in Tokyo.
Anyway I have no idea what I’m rambling about.
But a key reason why we here believe in free speech is that a diversity of opinions makes us all smarter and gives us more options.
There’s definitely something to it. In US we hyperfixate on color of skin.