You ask a volunteer merely to think of any one digit number. Then ask him to speak it out loud so that everybody can hear him (of course you can invite him, to change his mind as often as he chooses to). Let's say he chose the 4 (as always you make sure that everyone agrees that it was completely free choice). You then take the envelope, which was lying their all of the time, and pull out of it another, smaller envelope. As you turn the smaller envelope upside down a note falls in your hand. On the note is written the number 4.

Inside Thoughts is a new multi-optional envelope that will not only enrich any performance but also it is an easy outlet to save any unpredictable situations.

Comes complete with index cards, envelopes, and instructions.