" In one large US university, where roommates were assigned at random, a study found that white students who happened to end up with African American roommates were significantly more likely to endorse affirmative action, and that white students assigned roommates from any minority group were more likely to continue to interact socially with members of other ethnic groups after their first year, when they had full freedom in choosing whom to associate with. "

― Abhijit V. Banerjee , Good Economics for Hard Times: Better Answers to Our Biggest Problems