You could start this effect like this:
Have you ever known a great salesman? I mean the kind of person who consistently outperforms his colleagues, who’s able to maintain a high level of sales even during economic slumps? Some years ago I became aware of a study of such individuals, and what was especially intriguing is that each seemed to have the innate ability to project his will upon others, to influence prospective customers in such a way that they invariably did what he wanted. I began to wonder if it was possible to hone one’s own influence to such a degree, and I’d like to share what I discovered with a little experiment.
Effect: The performer displays a stack of eight quarters, one which he says is marked on the face. He lays the quarters out on the table, faces down, so only he knows which one is marked. He now explains that he’s going to attempt to influence a spectator not to pick the marked coin, which might well happen by chance, but to select every coin except the marked one. One by one the spectator points to coins which are turned face up to show they are unmarked. When only one coin remains, the performer directs the spectator to turn it over. Indeed the last coin is marked with a black X.
1st edition 2010; 3 pages.
word count: 1213 which is equivalent to 4 standard pages of text