The high school where I teach holds their graduation ceremony down in Trenton, at the Sun National Bank Center, and every year I forget how long a drive it is to get there and how much traffic piles up around the arena . . . this year I actually did an illegal u-turn over a grass divider when I realized here was a way to avoid the long line of cars trying to make a left off of Hamilton Street . . . but though my timing in the car was off, once I got into my robe and sat down to listen to the names of seven hundred and fifty graduates, I improved: as the enunciators started their arduous task, I took a few samples, made some back of the envelope calculations-- without an envelope!-- and added my figure to the current time posted on the large red digital clock hanging from the arena ceiling . . . 46 minutes plus 12:04 . . . and I announced to the students around me that the reading of the names would be done at exactly ten of one . . . and forty-six minutes later, the last of the students lined up at the foot of the stage, waiting to be called, and I started getting nervous . . . it looked like I might be right . . . my palms started to sweat . . . one of my students said, "I think you're going to hit it on the nose" and the other students in my vicinity starting saying things like "Hurry up" and "Come on" and, though there was nothing on the line, I really, really wanted my prediction to come true . . . but, alas, there must have been some small flaw in my calculations, because the last student was announced at 12:51 . . . but the kids were nice about it and one consoled me, "That was still a really good guess."