https://onlinelibrary.wiley.com/doi/10.1111/padr.12641
heres an article that discusses how inflated diversity could possibly be a cause of social tension. the article's abstract concludes with a shrug ('too many factors!') but it does provide links to research papers arguing both for and against this case.
on the surface it seems pretty clear to me. behaviour is encoded in genetics. if one were surrounded by the same group for a few thousand years, they would share a common base of encodings, therefore social behaviours could be assumed to a higher degree. reference behavioural encodings drastically diverge across cultures (as embodied by religious value sets, or at a different meta level, the idea of low trust vs. high trust societies). based on this drastic divergence, predictions made about one's neighbour scale downwards in accuracy relative to increased cultural diversity.
so i see that jacking up societal entropy leads to lowered societal cohesion. but thats just my stance and id love to hear yours.
diverse, millenia old, genetically encoded behavioural structures exist in our shared reality. id love to discuss this idea and the exact types of behaviours that can be encoded, down to the generational timespans required for encoding. that way we can talk about my idea in objective good faith.
'its all in your head' isnt objective good faith. applying the golden rule, you clearly accept bad faith ... man you couldnt tolerate a dissenting idea even momentarily before bringing out social ostracization and logical fallacies! sounds pretty similar to the behaviour of a racist, were you projecting?
that was said facetiously. im not trying to accuse you of anything, rather to show how it feels to be accused. to conclude i think its pretty easy to predict what my neighbours are eating for dinner at home and pretty hard in the city so youre gonna have to try a bit harder to convince me that the evidence of my eyes and ears is wrong.