Before the game begins show an envelope and say that it contains a prediction of who will win the game. If you prefer you can even put it in a safe! The envelope and paper can be examined before and after the revelation. There are no duplicates. There is only one paper and an envelope with a prediction. You will always be correct. No margin of error. Make bets with your friends and win.
Before the game begins show an envelope and say that it contains a prediction of who will win the game. If you prefer you can even put it in a safe! The envelope and paper can be examined before and after the revelation. There are no duplicates. There is only one paper and an envelope with a prediction. You will always be correct. No margin of error. Make bets with your friends and win.