Yeah, riffing on @k00b's point, I guess the devil must be in the details.  I don't feel adequate to the task of opining, but there's a few contradictory ideas in the mix: we've all probably seen regions of the world where it's a complete enjambment of cultures, where people with seemingly nothing whatever in common from a {race, culture, economic} perspective sweat together on subways and in tuk-tuks, and it's generally fine.  

And these other distinctions where you can't have a civil conversation with your neighbor who, from an outside vantage, would appear indistinguishable from you.  So when can you co-exist peacefully and when not?  How much of reality do we have to agree on, and could we curate that process?

elvismercury

culture

The Loss of Shared Facts

Undisciplined

That's a great point and I hadn't thought about it as a counter to the trend of global homogenization that people have been complaining about for decades.

Hopefully, it's possible for such distinct cultures to peacefully coexist when they're geographically proximate, because I think we'll be continuing without consensus for a while.