absent-minded professor strikes again

We have a new social science building, just completed, with wonderful new offices and classrooms. The big move begins next week. As folks pack up their offices, they've put books they don't want to move on a large table in a conference room, so students and colleagues can pick them up if they wish. I've put several stacks there myself.

Well, yesterday I walked in with a small armload of books, and as I was there, I looked through what others had left. Ahh, here's one that looks good! So I picked it up, opened it, and saw--you're ahead of me, aren't you?--my name. It was a book I'd put there earlier.