These maps are interesting:
Detroit was shown to have the most starkly segregated metropolitan area with a clear dividing line between black and white residents along 8 Mile Road, which runs across the northern edge of the city.
Mr Fischer, 37, started with Washington DC where the results showed a clear divide between predominantly white areas in the west, and black areas in the east.
The maps were created by Eric Fischer, a California computer programmer, using data from the 2000 Census of America.
He plotted one dot for each 25 people and gave colours according to how people were described in the census.
White people were represented by a red dot, black people by a blue dot, Asians by green, and Hispanics by orange.
But they\’re not really all that surprising.
The explanation (OK, a possible explanation but one which convinces me) is that such segregation will come about from only very small amounts of personal prejudice (no, not even prejudice as hatred for the other, can be just mild preference for the same) rather than requiring some overpowering institution or institutional racism.
In 1969, he published a widely cited article dealing with racial dynamics called \”Models of Segregation\”. In this paper he showed that a small preference for one\’s neighbors to be of the same color could lead to total segregation. He used coins on graph paper to demonstrate his theory by placing pennies and nickels in different patterns on the \”board\” and then moving them one by one if they were in an \”unhappy\” situation. The positive feedback cycle of segregation – prejudice – in-group preference[clarification needed] can be found in most human populations, with great variation in what are regarded as meaningful differences – gender, age, race, ethnicity, language, sexual preference, religion, etc. Once a cycle of separation-prejudice-discrimination-separation has begun, it has a self-sustaining momentum.
The best description I\’ve read of this (ie, one that I can understand, without the maths) is in Paul Ormerod\’s \”Why Most Things Fail\” but then of course all of you have already read that, right?