. . . "Preferential policies" . . . . "Thomas Sowell discusses his book, Preferential policies: an international perspective, with host Brian Lamb. The book examines the impact of government-mandated preferences on society and their role in heightening racial and ethnic polarization. In the interview Mr. Sowell also addresses the forces in higher education and economics that contribute to social division." . . . . . . . "Interviews" . . . .