What do maps, trains, and emergency dispatch services have to do with one entrepreneur's path to successful innovation? Everything. Jack Dorsey wasn't your average kid in St. Louis. He had a speech impediment. He loved maps. He studied trains. He listened to the emergency dispatch center. And he noticed something interesting: Everybody was talking with short bursts of sound. "They're always talking about where they're going, what they're doing, and where they currently are," Dorsey recently told Lara Logan on 60 Minutes, "and that's where the idea for Twitter came."Read Full Story