[ExI] Faster than light??

[Eugen Leitl]

On Fri, Sep 23, 2011 at 08:40:14AM -0700, Dennis May wrote:

> I would not be too concerned about any Earth shattering
> consequences if it were found that neutrinos were found
> to travel slightly faster than the speed of light - or other
> means of signaling faster than light were discovered.

I'd call retrograde signalling in time (which can be
indefinite via a chain of routers) and causality violations
pretty Earth-shattering. It would e.g. allow post-Singularity
entities to reach back in time, which can produce some
pretty dramatic pyrotechnics. If the reshaping of timelines
is iterative, you might not want to talk to even near-term
future.
  
> It would only mean that a variation of Lorentz Ether
> Theory would replace Special Relativity in some
> circumstances.  Tachyons and time travel would not be
> a part of such a theory.  Standard LET provides the
> same math and numbers as Special Relativity but it
> can be adapted to supraluminal signaling - whereas
> Special Relativity cannot.
>  
> http://en.wikipedia.org/wiki/Lorentz_ether_theory

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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