, Volume 148, Issue 2, pp 381-399

Superluminal Signaling and Relativity

  • Steven WeinsteinAffiliated withDepartment of Philosophy, Dartmouth College Email author 

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Special relativity is said to prohibit faster-than-light (superluminal) signaling, yet controversy regularly arises as to whether this or that physical phenomenon violates the prohibition. I argue that the controversy is a result of a lack of clarity as to what it means to ‘signal’, and I propose a criterion. I show that according to this criterion, superluminal signaling is not prohibited by special relativity.