An impossible prediction effect!

The classic mentalism effect is now available as a video download!
A clear wine glass is seen on a table center stage, containing a black envelope with a prediction. The spectators are asked to concentrate on a single thought and to write it down on a card and seal it in an opaque envelope. At your command, they all throw their envelopes onto the stage. A random spectator selects any one of the envelopes (again: NO force!). Let's assume the thought inside reads "ICE CREAM". She removes the prediction from the glass and opens it. She reads the prediction out loud: it matches the freely selected thought!

Now for the FINAL kicker: the lady is asked to open up the crumpled paper ball that was used to randomly select her as a volunteer. It reads: "Tonight, a beautiful lady called Annie will think of ICE CREAM!" "Brilliant and clever indeed... this gentleman has forged a total masterpiece."
- Larry Becker

"I think it's terrific prediction, and I love the final punch-finish. Clever and very practical."
- Peter Duffie

"It's perfect. The method is wonderfully simple and direct and I image it plays extremely well. I give it my highest recommendation."
- Sean Waters

"Brilliant, yet, simple, the only way to do it."
- Marc Salem