Have you read about the Schelling model of segregation? It is a model where non-racists can segregate due only to a slight preference to not be completely outnu

Have you read about the Schelling model of segregation? It is a model where non-racists can segregate due only to a slight preference to not be completely outnumbered. I speculate that the phenomenon you observed in the lunchroom could have been caused by a mechanism similar to the one described in Schelling's model. http://timharford.com/2009/03/the-logic-of-life-racial-segregation-and-thomas-schelling/ http://timharford.com/2009/03/the-logic-of-life-racial-segre... http://web.mit.edu/rajsingh/www/lab/alife/schelling.html http://web.mit.edu/rajsingh/www/lab/alife/schelling.html