Is a clock in one universe of any use to someone in a different universe? Supposing the multiverse model is correct, it posits the existence of several distinct universes that exist independently of each other. I understand how two separate universes can be independent in terms of their space: just imagine each universe as being different buildings on a street. But how does time fit into the theory? Does the passage of time through a universe only apply to objects that are contained within its own confines?
This seems paradoxical to me since if you were in a separate universe, you would have no meaningful way to speak of time in any universe other than your own and I find that difficult to comprehend. Thus, it would make sense to speak of the passage of time between universes in the same sense that we speak of the passage of time between observers in the theory of relativity.