In Docc's truly remarkable version of the Booktest plot, he has someone choose a random page from a book before turning his attention to the audience at large. They then name random letters from the alphabet which are drawn onto a white board. Finally, a word is wirtten on the back of the board. At the conclusion of the effect, the audience somehow named the correct letters of the word, the final selected word was wirtten on the back of the board and Docc even manages to work out which word the spectator changed from! This is a masterclass in making something small play HUGE!