The discussion centers on whether the universe's spacetime possesses an intrinsic clock or periodicity. Participants conclude that clocks require matter, as demonstrated by Earth's orbital period, and that spacetime cannot exist independently of matter. The block universe theory suggests a fixed history of spacetime configurations, but any change would necessitate an external reference point, which is not feasible. Ultimately, the consensus is that spacetime does not have a clock of its own, and any perceived periodicity is contingent upon matter and its interactions.
PREREQUISITESCosmologists, physicists, and students of theoretical physics interested in the nature of time, spacetime, and their relationship with matter.
Either would be fine with me, but as you can see, I may not notice...Atlas3 said:This is something I may want to discuss. I'm learning this bulletin board. Can I quote this reply when starting a new thread or maybe we could open a conversation to rattle this reply around some time? Thank you also for the reply.