Conjuring Credits

The Origins of Wonder

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cards:red_black_relationship_principle [2014/01/18 07:39]
tylerwilson
cards:red_black_relationship_principle [2017/06/28 14:57] (current)
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 ====== Red/Black Relationship Principle ====== ====== Red/Black Relationship Principle ======
  
-This principle makes use of the fact that there is an equal number of red and black cards in the deck. Thus when two piles are formed, one with x cards and the remainder with 52-x cards, then the number of red cards in x equals the number of black cards in the remainder plus 26-x. A special case is that the two piles are equal with 26 cards each, since in that case 26-x=0 and thus the red cards in one half equal the black cards in the other half.+This principle makes use of the fact that there is an equal number of red and black cards in the deck. Thus when two piles are formed, one with x cards and the remainder with 52 - x cards, then the number of red cards in x equals the number of black cards in the remainder plus 26 - x. A special case is that the two piles are equalwith 26 cards each, since in that case 26 - x = 0 and thus the red cards in one half equal the black cards in the other half.
  
 The roots of the trick can be found in an old puzzle involving the literal mixing of wine and water. David Singmaster has traced this puzzle back to //​Mathematical Recreations And Problems Of Past And Present Times, Third Edition//, 1896, p. 25. The first application to magic, involving red and black playing cards, appears to be Stewart James'​s [[http://​askalexander.org/​display/​12684/​The+James+File/​176|"​Tapping a Brain Wave"​]] and [[http://​askalexander.org/​display/​12684/​The+James+File/​178|"​The Psychic Pickpocket"​]],​ both devised in 1938, but not published until //The James File//, 2000, p. 1147-1149. ​ The roots of the trick can be found in an old puzzle involving the literal mixing of wine and water. David Singmaster has traced this puzzle back to //​Mathematical Recreations And Problems Of Past And Present Times, Third Edition//, 1896, p. 25. The first application to magic, involving red and black playing cards, appears to be Stewart James'​s [[http://​askalexander.org/​display/​12684/​The+James+File/​176|"​Tapping a Brain Wave"​]] and [[http://​askalexander.org/​display/​12684/​The+James+File/​178|"​The Psychic Pickpocket"​]],​ both devised in 1938, but not published until //The James File//, 2000, p. 1147-1149. ​