Imagine sitting in a backstage dressing room, snacking on trail mix and chatting with your friends, when your ballet teacher rushes in, frantically calling your name and informing you that one of the princesses has sprained her ankle and must be replaced in the ballet’s final act just ten minutes away. You are the shocked understudy required to dance in her stead. Then, picture the frenzied rush as everyone buzzes around you trying to help as you throw off one pair of pointe shoes, hastily tie on another pair, and stand trapped in place in...