Stan lies on the operating table, his eyes staring up at the bright lights above him. His chest rises and falls, the monitor next to him displays his heart rate, his pupils shrink and dilate when a shadow moves over his face.“How are you feeling, sir?” asks the doctor, gently shaking his arm. The response, when it comes, doesn’t come from the patient’s lips. It comes from a nearby speaker --Stan’s voice is actually that of the...