In General Relativity gravity is described as being a consequence of spacetime geometry. In Quantum Mechanics the different forces are described as being mediated by quanta. One of the predictions of QM is the existence of a particle that mediates gravity, namely the graviton. What I do not understand is how this would reconcile in any way with the predictions of GR. Most prominently, GR predicts that nothing can escape the event horizon of a black hole (because inside the event horizon all geodesics point toward the center, which means that there just is no way out and, in fact, there's no way for anything to avoid falling into the center; just advancing in time makes everything go towards the center). Hence no particle could possibly mediate the gravity between a black hole and everything else (because no such mediator particle is able to leave the black hole). The same goes for electric field. GR predicts that a black hole can have an electric charge (which can be measured from the outside). QM predicts that electromagnetic force is mediated by particles (photons, I think). But such particles (such as photons) could never leave a black hole in order to mediate with anything. How is this reconciled?