Employ the familiar Magicians play into your brains need to spot patterns. If a magician shows you only a few cards from a trick deck, your brain will fill in the blanks and youll assume the deck is normal. Conjure an out Magicians always have a backup planor three or four of them. Theyre ready for someone to make an uncommon choice, and theyve planned for secondary illusions to make up for it. Youll never fool a magician. If you think you can, youve already fallen for principle number four, hard. Control the frame Like a film director or photographer, magicians know how to draw your attention to where they want it. Youll always look where they want you to look because your brain cant help it. So there you have it. Illusions may not be real magic, but they fool your brain so well they may as well be.