On 10 January 2014 13:19, Jesse Mazer <[email protected]> wrote: Locality is preserved so long as no physical objects travel faster than > light. > >> >> I don't think physicists use such a narrow definition--if the equations > of QM were modified so that the EPR experiment could be used to transmit > *information* FTL, then even if no measurable particle or wave was observed > to move FTL this would still probably be seen as a violation of locality. > And the pilot wave in Bohmian mechanics is arguably just a sort of rule for > coordinating the behavior of distant particles rather than a "physical > object", but its ability to coordinate them instantaneously is typically > seen as a violation of locality. Unfortunately I have not been able to find > any very precise definition of locality that would give a totally clear > answer about cases like this, it tends to be stated in terms of imprecise > terms like "effects" and "influences". > > Yes, sorry, I was tacitly assuming that information can only be transmitted by physical objects (including by light). I don't think there is any good evidence for any influences *not* being transmitted by some sort of fundamental particle? (Even gravity - which also travels at c, I believe).
Time-symmetry arguments don't involve ANY influences travelling FTL. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
