““Black holes aren't an Earth Science topic, but Mr. Zerbiak is like that. One minute Adam Bell was asking a question about a meteoroid he found in his backyard, and the next Mr. Zerbiak was saying that he was "going a little off topic here, but..." and of course everyone was suddnely all interested. If teachers pretended that everything they said was "off topic", we'd have a whole school full of straight-A students.””