Can economics and better\xa0measurement help us understand racial disparities and suggest how to reduce or eliminate them? Economist Roland Fryer of Harvard University believes deeply in the power of data to help us understand how the world works and how we might change it. Listen as he tells EconTalk's\xa0Russ Roberts of his devotion to this mission, what he learned from his grandmother, and what colleges can do if they really want to increase minority enrollment.