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]
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-====== 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. 
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-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. ​ 
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-Oscar Weigle published "The Little Star Prediction"​ in //​[[http://​askalexander.org/​display/​36571/​Genii/​9|Genii]]//,​ Vol. 4 No. 3, Nov. 1939, p. 73. (It is presumably this publication that led Stewart James to avoid publishing his related routines.) 
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-Robert Hummer made use of the principle, in expectedly unusual ways. See [[http://​askalexander.org/​display/​14551/​Half+Dozen+Hummers/​5|"​The Magic Separation"​]] and [[http://​askalexander.org/​display/​14551/​Half+Dozen+Hummers/​6|"​Face Up Prediction"​]] in //​Half-a-Dozen Hummers//, 1940, p. 1 & 2, and a marketed trick, [[http://​askalexander.org/​display/​13059/​Bob+Hummer+s+Collected+Secrets/​50|"​Gremlins"​]],​ 1943. 
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-Another early use is Warren Wiersbe'​s "The Perfect Card Prediction"​ from //​[[http://​askalexander.org/​display/​14833/​Action+With+Cards/​19|Action With Cards]]//, 1944, p. 16. Later, Arthur Hill published "The Odd Color" in //​[[http://​askalexander.org/​display/​12839/​Pallbearers+Review+Vol+5+6/​138|The Pallbearer’s Review]]//, Vol. 6 No. 8, June 1971, p. 424. Here Karl Fulves writes: "The principle is old, but well concealed in this routine."​ 
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-The earliest use with unequal packets might be Roy Walton'​s "Duo Colors"​ in //​[[http://​askalexander.org/​display/​12842/​Pallbearers+Review+Vol+7+8/​85|The Pallbearer’s Review]]//, Vol. 7 No. 9, July 1972, p. 547. 
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-See also Arthur MacTier'​s //​[[http://​askalexander.org/​display/​17788/​Card+Concepts/​92|Card Concepts]]//,​ 2000, p. 80, "Full Deck Red/Black Relationship."​ No further historical information is included in this chapter, though. 
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-{{tag>​principle}}