On 4 January 2014 04:31, Gabriel Bodeen <gabebod...@gmail.com> wrote:

> (I'm expanding on the comment by Jason.)
>
> The "P-time" notion, if it means anything at all timelike, says that there
> exists some uniquely correct ordering of events across space.
>
> Consider these events: Pam's 3rd birthday party and Sam's 4th birthday
> party
>
> The "P-time" notion says that either (A) P3bp happens before S4bp, (B)
> P3bp happens after S4bp, or (C) P3bp happens at the same time as S4bp.  The
> "P-time" notion, having not developed in a scientific manner, can't offer
> any help in discovering which of A, B, or C is the case; it merely says it
> is the case that, in principle, exactly one of A, B, or C is true.
>
> By contrast, the past century of physics concludes that A is true in some
> reference frames, B is true in other reference frames, and C is true in
> other other reference frames.  It is NOT the case that, in principle,
> exactly one of A, B, or C is true.
>
> So there's a direct contradiction.  And "P-time" falls on the wrong side
> of the contradiction according to a whole century's worth of experimental
> work in physics.
>

Very nicely summarised.

>
> Furthermore, there is (scientific) theoretical work (c.f.
> http://www.sciencedaily.com/releases/2012/10/121002145454.htm ) that
> indicates that, by exploiting quantum behavior, we should be able to build
> a superposition of one causal order and the reverse causal order between
> two events in the same location.  If that pans out empirically, then the
> "P-time" notion won't even have the appearance of being a local
> approximation to the truth.
>
> Now that really IS fascinating!

(PS  Bruno may even know one of those people - Ognyan Oreshkov)

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