Based on an idea by Nick Trost. You will be thrilled with the splendid effect which you achieve in such an easy manner.
You show a packet of five jumbo cards cut in half. Two spectators shuffle the cards and split the packet taking some cards each. For example, one spectator has 4 cards and one has six. You place an envelope on the table and then show the cards to each spectator in turn. They look and remember the one half-card (that corresponds to the number of cards they each had in hand). Then you ask them to remove from the packet the half-card they have seen. Incredibly they match! Not only that, a spectator removes the prediction from the envelope and it is seen to be a card that matches the jumbo selected one.
Super easy to do. At the end everything can be examined.
1st edition 2010, PDF 3 pages.
word count: 866 which is equivalent to 3 standard pages of text