BBDO's Greg Hahn on 'mindhacking,’ sidestepping problems—and his all-time favorite guitarists

Greg Hahn is chief creative officer at BBDO New York, part of a worldwide agency network he half-jokes is “a global boutique.” After winning the Dunkin’ account last year, the agency shepherded the brand through a name change. It has also created acclaimed work for AT&T, Mountain Dew, Foot Locker and Sandy Hook Promise.In this episode of "Ad Block," Hahn talks about "mindhacking," a technique that he admits is a bit of a misnomer. “It’s about how