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Like most practitioners, Thomas Henry's interest in magic and mentalism dates back to childhood. In the very first book he ever checked out from a public library, he learned how to cut and restore a thread inside a soda straw. By junior high he was performing over sixty paid shows a year, but with somewhat better material.

Three key incidents from forty years ago determined his path. First was having been part of an audience committee on stage with that titan of mentalism, Dunninger. Next was being able to study privately under the elegant Dutch magician Bruno (Gerard Bruning). And the last was becoming a member of the International Brotherhood of Magicians. His current mentalism interests are the history of the craft, language deceptions and the psychology of showmanship.

Thomas Henry has had over 130 articles published on a variety of subjects. Among these are several on mentalism, including a One-Man Parade, which appeared in The Linking Ring. Within these pages lies a thorough investigation of the mathematics, psychology and subtleties of numerical methods in mentalism and mental magic. Despite the theme, Hidden Numerical Forces is not a book of number tricks. While numerical quantities and operations do figure in, they take a back seat to the unexpected twists in presentation.

Hidden Numerical Forces is truly a book of principles. Various complete effects are explained, but the emphasis is more on developing general techniques you can apply to create new handlings of your own. Think of it as a do-it-yourself toolkit brimming with unusual ideas for compelling psychic entertainment. Writing of these methods, author Thomas Henry says,

"In my opinion, none has been pushed to its full potential. Previous accounts have typically dwelled almost entirely on mechanical procedures and not presentations. The emphasis herein is on the nuances that polish these gems and truly complete the job."

Even better is the great attention given to the research. Readers with an interest in the history of magic and mentalism or those who simply wish to chase down an idea will find the extensive bibliographic entries and exhaustive index indispensable. Numerous appendices present even more detail, including ready-to-use props material. Hidden Numerical Forces is a genuine one-stop reference.

You'll never look at a number the same way again...

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