The so called flashback principle? Used mostly in book tests, where the first word on the left hand pages of a book, are repeated as the last word on the first line of the right side of a book. By riffling down the corner of the top of the book and allowing the spectator to call stop, the mentalist knows the word, because it's staring him in the face. Many books are printed this way and can be bought at magic shops but you can make your own just by printing the word atop the right hand page. Obviously, if you do make your own, you can't hand it out for examination. A thing you can do with the custom printed books. Just something to look for and to suspect when a mentalist won't hand you the book.
I'm posting this in anticipation, of future posts. Right now I'm just concentrating on the seance book I got from BobC, so I can review and explain some of the things in it. Till next time, good thoughts.
