You give a spectator two cards. One has a few words written on it, the other is a window card with a red decoding filter in it. You say this is a coded prediction. The spectator shuffles a deck of cards and selects one. When he looks through the decoder at the senseless words, he now sees the name of a card written very clearly. The chosen card is turned over and proves the prediction correct. The spectator then inserts the code card anywhere in the deck. The deck is separated at that point and the card below is taken out, but it is a different card! The magician is upset and tells the spectator that Nostradamus canĘt make mistakes. amazingly, when the prediction is read once more with the decoder, it has changed to suit the new chosen card!