According to the magician John Booth the stage mentalist David Devant managed to fool a number of people into believing he had genuine psychic ability who did not realize that his feats were magic tricks. At St. George's Hall, London he performed a fake "clairvoyant" act where he would read a message sealed inside an envelope. The spiritualist Oliver Lodge who was present in the audience was duped by the trick and claimed that Devant had used psychic powers. In 1936 Devant in his book Secrets of My Magic revealed the trick method he had used.[159]
Hmm. Believe Doug Ford, a politician with a high school degree, or George Akerlof  Nobel Laureate EconomistRobert Aumann   Nobel Laureate EconomistMartin Baily   Former Chair, CEABen Bernanke   Former Chair, Federal Reserve, Former Chair, CEAMichael Boskin  Former Chair, CEAAngus Deaton   Nobel Laureate EconomistPeter Diamond   Nobel Laureate EconomistRobert Engle   Nobel Laureate EconomistEugene Fama    Nobel Laureate EconomistMartin Feldstein Former Chair, CEAJason Furman   Former Chair, CEAAustan Goolsbee  Former Chair, CEAAlan Greenspan  Former Chair, Federal Reserve,Former Chair, CEALars Peter Hansen Nobel Laureate EconomistOliver Hart    Nobel Laureate EconomistBengt Holmström  Nobel Laureate EconomistGlenn Hubbard   Former Chair, CEADaniel Kahneman  Nobel Laureate EconomistAlan Krueger   Former Chair, CEAFinn Kydland   Nobel Laureate EconomistEdward Lazear   Former Chair, CEARobert Lucas   Nobel Laureate EconomistN. Gregory Mankiw Former Chair, CEAEric Maskin    Nobel Laureate EconomistDaniel McFadden  Nobel Laureate EconomistRobert Merton   Nobel Laureate EconomistRoger Myerson   Nobel Laureate EconomistEdmund Phelps   Nobel Laureate EconomistChristina Romer  Former Chair, CEAHarvey Rosen   Former Chair, CEAAlvin Roth    Nobel Laureate EconomistThomas Sargent  Nobel Laureate EconomistMyron Scholes   Nobel Laureate EconomistAmartya Sen    Nobel Laureate EconomistWilliam Sharpe  Nobel Laureate EconomistRobert Shiller  Nobel Laureate
In 1936, the psychical researcher Nandor Fodor tested the Hungarian apport medium Lajos Pap in London and during the séance a dead snake appeared. Pap was searched and was found to be wearing a device under his robe, where he had hidden the snake.[157] A photograph taken at a séance in 1937 in London shows the medium Colin Evans "levitating" in mid air. He claimed that spirits had lifted him. Evans was later discovered to be a fraud as a cord leading from a device in his hand has indicated that it was himself who triggered the flash-photograph and that all he had done was jump from his chair into the air and pretend he had levitated.[158]
The British medium Francis Ward Monck was investigated by psychical researchers and discovered to be a fraud. On November 3, 1876 during the séance a sitter demanded that Monck be searched. Monck ran from the room, locked himself in another room and escaped out of a window. A pair of stuffed gloves was found in his room, as well as cheesecloth, reaching rods and other fraudulent devices in his luggage.[77] After a trial Monck was convicted for his fraudulent mediumship and was sentenced to three months in prison.[78]
In 1880 the American stage mentalist Washington Irving Bishop published a book revealing how mediums would use secret codes as the trick for their clairvoyant readings.[84] The Seybert Commission was a group of faculty at the University of Pennsylvania who in 1884–1887 exposed fraudulent mediums such as Pierre L. O. A. Keeler and Henry Slade.[85] The Fox sisters confessed to fraud in 1888. Margaret Fox revealed that she and her sister had produced the "spirit" rappings by cracking their toe joints.[86]
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