You know you're old when your three-year-old picks up an old cassette tape recorder you have lying around, and asks: "Daddy, what is this?" But wait, it gets worse. I explained to my son Julian, "It works like an iPod." So he asked, "But how does it work?" I replied, "You have to put a tape in it." So Julian went down to the kitchen, pulled out a roll of duct tape from our junk drawer, and asked, "Now show me how it works."