General Relativity Isn't the True Description of Nature

General relativity says gravity isn't a force, it's just that space is curved. The only thing you can see is the effect that curvature on the motion of objects. So we don't know what's going on at the heart of black holes. It could be that the right picture of gravity is as a sort of antom field,. And you cond think about gravity as the exchange of gravitons.