- #1
rogerl
- 238
- 1
So physics is about measurements and following models that can explain stuff even if they don't correlate with reality? For example. General Relativity is believed even if space doesn't really curve. Only spacetime curves but not space. Since space is empty and doesn't have structure. It is not supposed to curve, but in GR.. space and time added together indeed produce curvature (at least in the model) which allegedly explained gravity.
We also have Quantum Field Theory as models of reality too.
But we know we can't unite Quantum Field Theory and General Relativity. Is the fault of this due to our making models that only explain measurements and not focusing on whether it correlates to reality (or how it actually happens in reality)? Perhaps this is related to why we can't unite the two, because physics is not about reality but about models only which explains measurements and hence the problem some models can't be united is because of our own fault?
About Quantum Gravity. Is QG all about quantizing gravity or does it have to do with how quantum objects got coupled to spacetime? I mean. If quantum gravity is solved. Would it explain how quantum objects got coupled to spacetime or would it only explain what goes on below the Planck scale?
We also have Quantum Field Theory as models of reality too.
But we know we can't unite Quantum Field Theory and General Relativity. Is the fault of this due to our making models that only explain measurements and not focusing on whether it correlates to reality (or how it actually happens in reality)? Perhaps this is related to why we can't unite the two, because physics is not about reality but about models only which explains measurements and hence the problem some models can't be united is because of our own fault?
About Quantum Gravity. Is QG all about quantizing gravity or does it have to do with how quantum objects got coupled to spacetime? I mean. If quantum gravity is solved. Would it explain how quantum objects got coupled to spacetime or would it only explain what goes on below the Planck scale?