I've Got a Good Feeling About This

You've probably seen this video clip by now. It's a fairly amazing feat, but as Chris Jones explains, the contestant's reasoning leads to a fairly certain answer. As an experiment, I explained the game and the situation with this puzzle in three separate classes I taught today, with between one and six students each. With a little prodding, (circling the _'__ and _) each group was able to solve the puzzle within a couple minutes. These are groups of non-native English speakers, and certainly not big English-language puzzle fans. All the groups looked at it as an impossible task, but realized it wasn't as difficult as it seemed at first. An interesting reflection on possibility and appearances.