Nicely demonstrated, Brent, although I would say that one shouldn't talk
about signals "going back in time", because that creates a false image of a
second time in which signals travel through spacetime* - that isn't what
happens, of course, in a block universe.

All that actually happens is that the past state of the photons is
influenced by a future boundary condition.

*and before we know it Edgar will be along to explain how the moving
present contradicts it...!

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 post to this group, send email to
Visit this group at
For more options, visit

Reply via email to