[centicosm]

There are interesting agent-based models that explore segregation based on the relatively innocuous idea that people have a tendency to want at least some portion of their neighbors to be similar to themselves (across some dimension). In those models, segregated populations are found to occur with frequency far exceeding what one might think would emerge without explicit intent. http://nifty.stanford.edu/2014/mccown-schelling-model-segreg...