On Friday, November 29, 2024 at 9:57:08 PM UTC-7 Bruce Kellett wrote:
On Sat, Nov 30, 2024 at 3:37 PM Alan Grayson <[email protected]> wrote: On Friday, November 29, 2024 at 6:02:49 PM UTC-7 Bruce Kellett wrote: Non-local does not mean that there are specifiable interactions between the remote observers. If there were such interactions (FTL , say), then the theory would involve only local interactions. FTL interactions are just as local as any other interactions. Non-local means that the system depends on both x_1 and x_2, when x_1 and x_2 are at different locations (say, spacelike separated). Bruce Isn't spacelike separated a necessary condition for non-local? You write as if it's one of possibly several necessary conditions. AG No. Spacelike separation is not necessary. You can have a non-local effect whenever something depends on both x_1 and x_2, when these refer to separate locations, without any local communication between the points. Given points A and B, if whatever happens at A cannot affect B, and vice versa, then the relation between A and B is non-local. The points need not be spacelike separated. Bruce Can you give an example of something depending on two separate locations where there is no communication between the points? AG -- 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 view this discussion visit https://groups.google.com/d/msgid/everything-list/4147a2f8-b806-4b1a-8faa-099cd0bce5aan%40googlegroups.com.
