Malcolm Gladwell, New Yorker columnist and author of "The Tipping Point," talks with Recode's Peter Kafka about his new podcast, "Revisionist History." Gladwell thinks his new foray into audio will have a more emotional effect on listeners than his columns and books, because "you feel with your ears and you think with your eyes." He also discusses how he wandered into a job at the Washington Post in the 1980s and the proliferation of mass shootings in America, from Columbine to this week's tragic attack on the Pulse nightclub in Orlando.