talkmagic.co.uk

Last night I was practising my juggling when I thought I'd like to try a trick that used juggling as a central part of it. The idea I came up with was to have a spectator select a card, then take two other cards. They would then place the 3 cards on a table. I would then juggle with balls marked 1, 2, and 3, and once they said "Stop", the ball they selected would correspond with the position of their card. I have no problem doing this if the cards are face up, but I'd imagine face down would be a lot more impressive. So my question is, without using a marked deck, is there a reliable way of doing this? If so, can you direct me to a book, or some other resource, to learn the method? Thanks.

Magician's choice, "stop" could refer to the ball you have just thrown, just caught or the ball you are about to throw. No problem.