Very interesting. I wonder if you could get readily available quantitative information that supports this sort of model. It does strike me as descriptive. One

Very interesting. I wonder if you could get readily available quantitative information that supports this sort of model. It does strike me as descriptive. One thing that I think can have a big impact is a third group: latinos or east asians who will have different diffusivity and break up the existing monocultures. Settle Syrian Refugees in Cleveland, Mississippi?! They'll probably be happy to go to any school not in a war zone.