At a nursing home in Miami, Florida, a group of senior citizens were sitting around talking about their ailments: “My arms are so weak I can hardly lift this cup of coffee,” said one. “Yes, I know. My cataracts are so bad I can't even see my coffee,” replied another. “I can't turn my head because of the arthritis in my neck,” said a third, to which several nodded weakly in agreement. “My blood pressure pills make me dizzy,” another went on. “I guess that's the price we pay for getting old,”...