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misc:off-by-one_strategy [2013/03/29 12:48] – tag added denisbehr | misc:off-by-one_strategy [2014/05/23 04:43] – stephenminch | ||
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====== Off-by-One Strategy ====== | ====== Off-by-One Strategy ====== | ||
- | While independently conceived and popularized by Kenton Knepper in his marketed Card-in-Wallet effect, " | + | While independently conceived and popularized by Kenton Knepper in his marketed Card-in-Wallet effect, " |
- | Anton eventually released a marketed version at the 2000 FISM convention in Lisbon. The ad copy (translation by Roberto Giobbi) reads: | + | Anton eventually released a marketed version |
- | Mago Anton in his untiring search for new effects and original presentation ideas has transposed those feared "few extra pounds" | + | Mago Anton, in his untiring search for new effects and original presentation ideas, has transposed those feared "few extra pounds" |
- | Effect: You give out a blackboard for examination, | + | Effect: You give out a blackboard for examination, |
- | Then you draw a set of scales on a flip pad which reads 0 kg. You invite a spectator up onto stage and get them to sign the picture (for obvious reasons women are generally more worried about those few extra pounds than men, so make use of this fact!). Stand the spectator on the drawing of the scales and tell them that they must tell the truth: for the first time everyone will know the truth and the whole truth about their weight! | + | Then you draw a set of scales |
- | The spectator gets off the scales and everyone sees that it reads 70 kg. With a great smile and sigh of relief the spectator announces that you have made a mistake. Surprised you ask what is (according to her) her real weight. Let us suppose that she says 62 kg. Draw everyone' | + | The spectator gets off the scales and everyone sees that it reads 70 kg. With a great smile and sigh of relief the spectator announces that you have made a mistake. Surprised you ask what is (according to him) his real weight. Let us suppose that he says 62 kg. Draw everyone' |
- | You do not need to be a genius of mathematics to work out that 70 minus 8 equals 62, exactly the weight | + | You do not need to be a genius of mathematics to work out that 70 minus 8 equals 62, exactly the weight the spectator claims to be! You reap you applause and the spectator goes back to his seat happy that he still keeps his greatest secret. |
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