Time\'s Arrow (General)

by dhw, Friday, May 09, 2014, 11:56 (3850 days ago) @ David Turell

dhw: Do these experts mean that if there is no observer, there is no time? Surely not.-DAVID: Agreed-dhw: Swenson wrote: "I don't pretend to know how tomorrow can exist simultaneously with today and yesterday. But at the speed of light they actually and rigorously do. Time does not pass." I can see how observers of time can telescope yesterday and today, though I'm not sure about tomorrow. But can you please explain to me how time itself can be telescoped?-DAVID: It is back to time stops at the speed of light. At that speed you cannot observe the passage of events, which to me is a definition of time.-But the fact that you cannot observe the passage of events does not mean that the events don't happen. And so even by your definition of time, it is not time that stops but the observation of time. Otherwise, we are back to saying that if there is no observer, there is no time.