Is time travel possible? In his new book, Physics of the Impossible, renowned physicist Michio Kaku warns us that nothing should be considered impossible or beyond our eventual understanding. "In my own short lifetime," he writes, "I have seen the seemingly impossible become established fact over and over again."
In "Physics of the Impossible," Kaku divides the "seemingly impossible" into three classes: Class I consists of technologies that "might be possible in this century," including "teleportation, antimatter engines, certain forms of telepathy, psychokinesis, and invisibility." Class II awaits the wisdom we will have acquired in "millennia to millions of years in the future" and includes time machines, hyperspace travel and popping through wormholes in space into another universe. Class III is the "perpetual motion machine" and precognition. Kaku concludes that if "they do turn out to be possible, they would represent a fundamental shift in our understanding of physics."
Posted by Casey Kazan
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