A spectator is given a shuffled deck of cards and asked to sort the decks into two piles -- red cards in one pile and black cards in another pile -- without looking at their faces. When the spectator is done, the two piles are spread and it is seen that the spectator has correctly sorted the cards.
Before the trick takes place, the magician must secretly arrange the deck. The order of the cards does not matter, however the magician must make sure that all of the red cards (hearts and diamonds) have red backs, and all of the black cards (clubs, etc.) have blue backs.
At the beginning of the trick, the cards are taken out of the box face up and shuffled face up. They are then fanned face up to show that the cards are mixed. The whole theme here is "face up." If spectators see the backs of the cards, some of them might question why they are seeing so many colors.
After the cards are shuffled and displayed, they are gathered into deck shape and given -- face down for the first time -- to a spectator. The spectator is asked to deal the cards into two piles, with red-suit cards on the left and black-suit cards on the right. To make things more difficult, the spectator should do this blindfolded. The magician may want to put coins over the spectator's eyes, fix them in place with adhesive bandages, cover this with raw bread dough, and wrap the face with gauze, just to make 100% certain that there is no possibility of peeking.
As the spectator deals the cards face down, the magician can easily tell which cards are going into the wrong pile by observing the backs. For example, if a blue-backed card goes into the pile for red-suit cards, that would be bad. To remedy the situation, the magician just reaches in and moves the card to the correct pile, and the spectator can't tell because of the blindfold!
When it's all over, the magician turns both stacks face up while the blindfold is removed, and then spreads the stacks to show how perfectly they were divided. A miracle!
By employing 13 decks with different backs, this trick may be modified so that the cards are sorted by value instead of suit.
But what if the magician doesn't have cards with two different color backs? Out of This World may be performed with a normal deck -- even impromptu -- as well!
There are two ways this may be accomplished.
If the spectator is alone, the shuffled deck may be inverted before it is given to the spectator for dealing into two piles. The spectator thinks the cards are being dealt face down, but they are really being dealt face up, making it easy for the magician to correct mistakes. It is important that the spectator be alone in this case, because the face-up deck will not fool those watching the trick unblindfolded, and blindfolding a group of spectators gets tedious.
If there is a crowd watching, the magician will ask the spectator to sort the cards differently. Cut the deck in half, turn one half face up, and shuffle the halves together, creating a deck that is half face up and half face down. Blindfold the spectator and announce that, while blindfolded, the spectator will deal face-up and face-down cards into separate piles. While the magician is explaining this, use an out faro overhand Hindu false-angle separation pass to put all the cards face up again.
The spectator creates two piles of cards -- all of them face down. When the dealing is done, as the spectator removes the blindfold, the magician "adjusts" the positions of the stacks, secretly turning one over using a "Mexican turnover" move. It looks like the decks were correctly sorted!