…Natural Intelligence has developed an application called the “Ethnic Simulator” that models the residential behavior of people in the hypothetical ethnically diverse city of Metropolis. …The premise of the Ethnic Simulator is that ethnically distinct groups have a modest preference to live among their own kind. In Metropolis there are five ethnic groups Â–- Blues (the majority), Greens, Reds, Grays, and Yellows. The application allows the user to set the percentage of preference of each group for its own kind.
Outcome? Regardless of how “racist” the majority Blues are, the minority Yellows end up in “ghettos” if they express even the most minor preference for being near each other…. Intuitively obvious perhaps, but interesting to see mathematically modelled.