How to create the impossible
How to predict the unpredictable
Well, you can do BOTH of the above, with… Bluff!
Display a sealed envelope, and place it in full view on the table
OPEN A NEW DECK (cellophane and label)
Show the deck face and back, then mix and cut it
Spread it on the mat
Then, each spectator removes as many cards from the left and the right portion of the deck, AS THEY DESIRE!
This leaves, at the end, only one card
The spectator opens the envelope: the prediction card is exactly the same!
This effect can be performed by always using THE SAME DECK.