Bill Bishop spoke about his book, The Big Sort: Why the Clustering of Like-Minded America Is Tearing Us Apart (Houghton Mifflin; May 7, 2008). It was originally begun as a series of articles for the Austin American-Statesman that he wrote with Robert Cushing, a retired sociologist and statistician from the University of Texas. In his book Bill Bishop contends that Americans have segregated themselves into like-minded communities that include everything from their neighborhoods to social organizations and argues this homogeneity has produced a polarized political and social culture. Following his remarks, Mr. Bishop responded to questions from members of the audience.