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The question of the nature (or ontological status) of fundamental physics theories, such as spacetime in special and general relativity, and quantum mechanics, have been, each, a permanent puzzle, and a source of debates. This discussion aims to resolve the issue, and submit the solution to comments.
Also, when something is correct, this is a sign that it can be be proved in more than one way. In support of this question, we found evidence of the same answer of the ontological status, in three diverse ways.
Please see at:
1. Preprint On Four Relativistic Neutral Particle Accelerators
2. https://www.researchgate.net/post/Is_only_one_or_even_infinite_inertial_reference_frame_enough_in_physics2
3. https://www.researchgate.net/project/CAN-MIND-AND-CONSCIOUSNESS-BE-UNDERSTOOD-USING-NATURAL-SCIENCE/update/5bd535ea3843b0067541052b
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