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Does the universe have a speed limit? If not, some effects could happen at the same instant as the actions that caused them \\u2014 and some effects, ludicrously, might even happen before their causes. By one hundred years ago, it seemed clear that the speed of light was the fastest possible speed. Causality was safe. And then quantum mechanics happened, introducing spooky connections that seemed to circumvent the law of cause and effect. Inspired by the new physics, psychologist Carl Jung and physicist Wolfgang Pauli explored a concept called synchronicity, a weird phenomenon they thought could link events without causes.\\xa0Synchronicity\\xa0tells that sprawling tale of insight and creativity, and asks where these ideas \\u2014 some plain crazy, and others crazy powerful \\u2014 are taking the human story next. Shermer and Halpern discuss:
Paul Halpern is a professor of physics at the University of the Sciences in Philadelphia and the author of sixteen popular science books, including\\xa0The Quantum Labyrinth\\xa0and\\xa0Einstein\\u2019s Dice and Schr\\xf6dinger\\u2019s Cat. He is the recipient of a Guggenheim fellowship and is a fellow of the American Physical Society. He lives near Philadelphia, Pennsylvania.
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