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Tachyon They are hypothetical particles that always travel faster than light. Until recently, they were commonly thought to be entities that did not fit into the…

Any random series of events, like ocean waves lapping on a shore, could be a clock, and physicists have now devised a mathematical procedure for building such strange clocks and measuring their accuracy. “How can you turn anything into a watch? We decided to approach that problem by thinking about the process that is, in