It wasn't a major event or crisis-inspired epiphany that led Daniel Klein to consider how to spend his old age; rather, it was a trip to the dentist. Confronted with the choice to spend a year of painful dentist visits and thousands of dollars on implants to avoid "an old man's goofy smile," Klein decides instead to go to Greece and ponder how to enjoy an "authentic old age" — one that doesn't involve pain or the "youth implants" that came to symbolize the American desire to stay forever