He may publicly cast doubt upon your psychic powers, causing you great humiliation. You may sue him. And he doesn't even have to use up any psychic energy to make that prediction. The kit includes an audio tape, a crystal and a book with topics such as how to develop your ESP , dowsing , crystal power, color therapy, and, of course, telekinesis . Many magicians do what Geller does, but they call themselves magicians or mentalists.
Good magicians are good tricksters and good tricksters can fool the wisest of men.
They can amaze people with their ability to seemingly move objects with an act of will, suspend objects in space, view objects which are remote, read your mind, predict the future, identify the content of hidden messages or drawings, etc. What is amazing is that they don't amaze people by winning the lottery or finding a cure for cancer. The answer is obvious. Such useful feats would require more than distraction and legerdemain. Because most really intelligent people are too foolish to realize that they are not so intelligent as to be beyond being fooled.