Welcome to Week 6 of our weekly video and TV series. In this episode I wrap up my coverage of the 2013 IdeaFestival in Louisville. I spoke with Oliver Burkeman, author of "The Antidote: Happiness for People Who Can't Stand Positive Thinking." With so much literature available these days on the subject of happiness, Burkeman offers his own โ sensible? gloomy? contradictory? โ take. Check it out:Coming up next week: My conversation with New York Times columnist Joe Nocera on college sports, politics, gun control and more.