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Causality & Hyperspace

  1. Dec 10, 2004 #1


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    As far as I understand, FTL communication (or instantaneous communication) is impossible because one cannot define what "instantaneous" means, so you run into problems.
    What if there were some kind of sub-/hyperspace with an absolutlely defined time and instantaneous messaging? Do the paradoxes still arise when communication is happening always instantaneous wrt this hypothetic preferred frame?
    Does such a possibility violate some known laws of physics, or is it just that there is absolutely no evidence for it?
  2. jcsd
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