One thing that happens as you get older, sometimes you wake up in the middle of the night with some small issue or happenstance nagging at you -- something mysterious or perplexing that somebody said -- and you can't resolve it, and you can't go back to sleep, and you finally just get up, between 3:30 and 5 a.m. usually, and put some coffee on, and find something to read until the morning paper comes.