Impossible Prediction
THE EFFECT: You ask a spectator to think of a shape. Looking into their eyes you take a piece of paper and write down a prediction of what you think their shape is.
When you have finished writing your prediction you fold up the paper and ask them what their prediction was, they say it, you look nervous and place your prediction into a glass.
You then ask them to pick a number, you write down your prediction fold the paper up and place that into the glass. You ask them what their prediction was. They tell you and you look even more nervous!
Finally you have them pick out a playing card from the deck. You write your prediction on a piece of paper, put it in the glass and again they tell you it. Looking worried you ask them to remove all the pieces of paper and reveal that
ALL YOUR predictions all are absolutely correct!
THE SECRET: First get the deck of cards and put a certain card that you have memorised on the bottom of the deck. You are now set. When you tell the spectator to pick a shape you actually write down the card you placed on the bottom of the deck (they think you are drawing a shape) write a small number 3 on it for reference and put into the glass.
Now you tell them to pick a number and while pretending to write the number actually write down the shape they picked before. Write a small number 2 on this for reference and put into the glass.
Finally you ask the spectator to pick a card however you need to force the bottom card on the spectator. The easiest way to do this is to ask them to cut the cards and place the bottom half on top of the deck sideways to 'finish the cut'. Get them to look at the card they cut to which in actual fact will be the bottom card!
Ask them to memorize the card and while you are pretending to write down their card actually write down the number they picked before. Write a small number 1 on the paper for reference and put it in the glass. All that is left for you to do is reveal that all of your predictions are correct!
Because you have been one step ahead from the beginning with the force you are able to write down the predictions
AFTER they tell you. However your spectator is totally unaware of this fact and think your have made the prediction
BEFORE they tell you.
TIP: Numbering the predictions 1-3 helps subconsciously enforce that the shape was chosen first, the number second and the card third. Even though you have written them in reverse order!
TIP: Make sure the numbers are written small and in the corder of the paper, so they can not be confused with the actual predictions which should be written large in the middle of the paper.
TIP: Every time you write your prediction, nervously asking the spectator what their prediction was it makes it seem like you are not sure whether you are correct. So the final revelation is that much more hard hitting!