Bloomberg Opinion columnist Barry Ritholtz interviews the Nobel-winning economist Robert J. Shiller, whose latest book, "Narrative Economics: How Stories Go Viral and Drive Major Economic Events," came out Oct. 1. Shiller, a professor at Yale University, has written about financial markets, innovation, behavioral economics, macroeconomics and real estate, among other topics. He was awarded the Nobel Prize in Economic Sciences jointly with Eugene Fama and Lars Peter Hansen in 2013.