On this Martin Luther King day, here is somthing to contemplate. I know that the civil rights movement in the U.S. did a lot of good and helped people to become more enlightened, but there is still considerabe segregation in this country. Check out some of these maps

How can this be? The economist Thomas Schelling created an interesting model that shows that even if you are willing to tolerate only ⅓ of your neighbors looking like you, the result is segregated neighborhoods. You can get to play with the model here

I am not proud to say this, but if my neighborhood was only ⅓ white, I might consider moving somewhere else, and I am sure that I am far from being alone on this. We have a long way to go before we get past racism. Maybe this model can get us to do some rethinking.