I don't disagree with your sentiment - any future theory must hold to current theories at its limit. But I disagree that we know what anything really. To know w

I don't disagree with your sentiment - any future theory must hold to current theories at its limit. But I disagree that we know what anything really. To know what gravity is really we must answer. What is mass, space, time, spacetime, inertia? Is the graviton real? Is space continuous or discrete? Also note curving of space is due to more than mass lest how would light beams be gravitationally responsive? Curvature is described by the stress energy tensor. What we do have are human graspable descriptions of plausible moves based on our observations of chess pieces. We have no coherent theory on the game or why it is played. But that does not matter. A more important issue intertwined with this bias is: are notions of information and entropy more fundamental to how we formulate laws than anything intrinsic to energy and space?