Masterful forcing made easy!
Show two dice, an empty box and a piece of paper on which the performer has written two numbers of the dice as a prediction. Place the two dice into the box and shake.
When the box is opened the numbers of the dice showing are the same as the numbers the performer has written on the paper!
Ask a spectator to select any two numbers and place the two dice into the box again.
Upon shaking the box and reopening it again the numbers of the dice are the same as those selected by the spectators!