Maria Konnikova doesn’t buy the 10,000 hour rule—that theory popularized by Malcolm Gladwell that it takes at least 10,000 hours of serious practice to become a world-class expert at an activity. She believes she’s found a way to short-circuit it, and it involves marshmallows and poker. We sat down Konnikova, a bestselling author and contributing writer for The New Yorker, this week at SXSW EDU.