> > Also, note the use of the "force". He reduced the number of possibilities for the > > card from 52 (53, if you count the joker) to 48. (Pay very close attention to the > > wording of the questions to the audience members.) > > Oh, less than 48. By a lot. The ball provided psychological cues, and having multiple > people make the choice kept any one from picking up on them. Then, of course, the > three printed cards broke the deck into four groups of cards.
What cues did the ball provide?
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