Non-majority opinion/Guestimate of reality follows:
I think that spacetime is an emergent phenomenon of something that has no dimensions. Imagine RAM in your computer, inherently there's an address dimension when the CPU needs to read/write data, but the actual physical location doesn't matter (other than latency).
How correlated two bits of matter/energy/spacetime are is a good proxy for distance, except when it isn't. A photon leaves a star, then strikes your eye a billion years later, and those events could be entangled, as far as the photon is concerned, they happened at the same instant in time.
However the laws of physics work, I don't see how there can be any direct mapping between what we see, and the underlying quantum phenomenon, as long as light and quantum superpositions / entanglement, are things.
I think that spacetime is an emergent phenomenon of something that has no dimensions. Imagine RAM in your computer, inherently there's an address dimension when the CPU needs to read/write data, but the actual physical location doesn't matter (other than latency).
How correlated two bits of matter/energy/spacetime are is a good proxy for distance, except when it isn't. A photon leaves a star, then strikes your eye a billion years later, and those events could be entangled, as far as the photon is concerned, they happened at the same instant in time.
However the laws of physics work, I don't see how there can be any direct mapping between what we see, and the underlying quantum phenomenon, as long as light and quantum superpositions / entanglement, are things.