Ignore the above for now while I ask the relativity forum whether spacetime geometry is produced by matter or it is there even without matter.
I've been reading an interesting thread in the archive called "Does Schrodinger's Cat Paradox Suck?" where you participated and exchanged ideas with someone called Ken G.
Ken G. wrote:
You believe that a cat can never be in pure state by principle? But if one used the Heisenberg Interpretation where there is actual ontology. Can the cat exist as pure state? In Copenhagen, maybe it's not possible because they believe the wave function as just calculational tool. Without tracking the cat body down to the atoms and particles. You don't know the wave function to enter into calculation. In this sense. One can't treat the cat as in pure state when completely isolated in 100% hypothetical isolation box. But in Heisenberg Interpretation where everything actually happens. Maybe we can say that the cat is in pure state even if we didn't measure or prepare it to be in pure state from the beginning?? Or is the analysis the same in both Copenhagen and Heisenberg version where the cat can never be in pure state because beside not able to prepare it in pure state, the cat complex body parts can never in principle be in pure state? (Jesse, if you are reading this, pls comment too as we have discussed at length about pure state, mixed state but you are using Copenhagen version. What happens if we use the Heisenberg version where everything *actually* happens (like superposition, collapse) as described).