I like a great deal of the material that Mr. Carey puts out. It is often practical and clever.
This, however, is not his best work. While this could be an amazing piece under the correct
circumstances, I think that the student will be much better served by purchasing Max Maven's work on
equivoque (called Multiplicity and linked at the end of the review). The DVD by Mr. Maven will
teach you many methods for this kind of trick and prepare you for any situation in which you might
find yourself.
Overall, if you like this kind of thing and would like to do it while out with
friends, the download is clear and to the point. On the other hand, if you want a master class in
allowing the spectator to choose any item, and yet still end up with the one you predicted, go with
this http://www.penguinmagic.com/p/S16914 The DVD is more expensive, but good education often is.