I believe you’re speaking about General Relativity, Quantum Mechanics refers to “quantum” aka discrete, non-smooth things like the energy levels of electrons.
General Relativity indicates that the temporal ordering of events may appear different to different observers, although there is a way to objectively switch between perspectives it describes.
In all cases, the theories point to a uniform, self consistant reality, as that is in fact their very purpose. If they didn’t work as expected, your GPS wouldn’t be a thing.
pcalau12i@lemmygrad.ml 1 day ago
No. There is an obsession many people have, from laymen to academics alike, with quantum woo and trying desperately to extrapolate bizarre metaphysics from the linear algebra, but nothing in the mathematics of the theory necessitates their crackpot ideas.