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Published online 2 May 2001 | Nature | doi:10.1038/news010503-6
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The ultimate no-brainer
A quantum computer can solve problems even without being switched on.
John Cage's composition 4' 33" is a piano piece that is performed by not performing. The pianist goes through all the preliminary motions, but sits in silence for 4 minutes and 33 seconds -- after which, one assumes, the audience applauds.
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