A large envelope containing a prediction is placed in full view as twospectators select a card. The premise is simple. Within the envelopeare two predictions, the first is the same suit but one half the value ofthe first spectator's card and the second prediction is double the valueof the second spectator's card. In a loud clear voice, the first spectatornames his card. It is the ten of spades. Which means that your predictionshould be the five of spades. Open the envelope to remove a jumbo five of spades. Turn to the spectator and ask him to name his card. To everyone's surprise, he names the seven of clubs. This always gets a huge laugh sincethere is no such card as the fourteen of clubs! Just when the audiencethinks you have made a mistake, the jumbo card is turned over to show your prediction - the fourteen of clubs!