What makes a trick work is not the inherent astoundingness of its effect but the magician’s ability to suggest any number of possible explanations, none of them conclusive, and none of them quite obvious. As the law professor and magician Christopher Hanna has noted, two of the best ways of making a too perfect trick work are “reducing the claim” and “raising the proof.” Reducing the claim means roughing up the illusion so that the spectator isn’t even sure she saw one—bringing the cigarette in and out of the coin so quickly that the viewer doesn’t know if the trick is in the coin or in her eyes. Raising the proof is more demanding. Derek Dingle, a famous closeup man, adjusted the Cigarette Through Quarter trick by palming and replacing one gaffed quarter with another. One quarter had a small hole in it, the other a spring hinge. By exposing the holed coin, then palming that one and replacing it with the hinged coin, he led the spectator to think not There must be two trick coins but How could even the trick coin I’ve seen do that trick? Or one might multiply the possible explanations, in a card-guessing trick, by going through an elaborate charade of “reading” the spectator’s face and voice, so that, when the forced card is guessed, the obviousness of the trick is, well, obviated.