<i>On the occasion of his fiftieth birthday, Dilbert creator Scott Adams wrote:</i> When I was 20, I wondered what it would be like to be 50. None of my guesses were close. I assumed that "aging" was automatically bad, so I didn't look forward to it. No one told me that having more friends and fewer zits would feel like a good tradeoff. And if you told me I could have my twenty-year old body again, but I had to take my twenty-year old brain with it, I'd pass.