I have heard it explained multiple time by different science educators that what we feel as gravity is a really just a consequence of curvature of spacetime and no real force is being applied. Why do we need to make gravity work with the standard model, and why are we looking for gravitons if there is no actual force and it is just caused by the geometry of the universe?
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I’ll just leave this here
“It is wrong to think that ‘geometrization’ is something essential. It is only a kind of crutch [Eselsbrücke] for the finding of numerical laws. Whether one links ‘geometrical’ intuitions with a theory is a … private matter.” (Einstein to Reichenbach, 8 April 1926)
Einstein himself didn’t seem to read too much into this interpretation. But Einstein was also wrong about other things, so I guess he could be wrong about this.
The math of GR is firmly rooted in the math of curved surfaces. But this is an ontological question. Does the math *describe* the thing. Or *is it* the thing. Our *spacetime model* is described by curved surfaces, but are space and time in reality one and the same as our model? Who knows…..
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