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 The idea of having a neutral position built into pocket watches was used by magicians during the time when such watches were in vogue (and sometime after). Others forcing approaches with watches were Stull's multiple setting pocket watch and Milton's double-faced hunter's case watch. Richard Himber updated the idea in the 1960s with a specially altered wristwatch he sold as "Time Capsule". In 1973, John Pomeroy found a diver's watch readymade with this feature, and explained that other wrist watches could be altered for the job by having a diver's crown installed. He published the idea in a book titled //Mentology// (see "A Matter of Time", p. 37). Bergeron's only contribution was discovering a cheap and popular brand of watches by Seiko with the required type of crown built in. Bergeron claimed to have run across this type of Seiko in 1969 (four years before Pomeroy's book was published, though probably not before he came up with the idea), but didn't publish the idea until 1989, in a manuscript, //[[http://askalexander.org/display/26561/Predicting+Time|Predicting Time]]//. Pomeroy's book is included in Bergeron's bibliography.
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Conjuring Credits