Paddoboy, though it may not seem obvious when discussing the further collapse, the event horizon that emerges at the Schwartzschild radius crates the initial conceptual problem for both GR and Newtonian mechanics and the idea of black holes. While the singularity represents the location where predictions end, the event horizon is where the division between what we know and observe as reality and the black hole begins. Since a gravitational field is generally accepted as propagating at c, even the field becomes conceptually disconnected at the event horizon. This is one of the problems.., and perhaps the most important, that a quantum theory of gravitation should resolve. While establishing a surface associated with the collapsed mass of a black hole is important to avoiding the problems introduced by singularities, addressing the conceptual explanations currently associated with the predicted event horizon and speed of light escape velocities, is more important conceptually, where developing a successful quantum theory of gravitation is concerned. The speed of light escape velocity is a prediction that both conceptually establishes the event horizon and eventually leads to the singularity. However, an escape velocity of c is only significant if you assume there are any photons being emmitted and trying to cross that imaginary line in the sand, and connecting spacetime across the event horizon. If the physics of matter, inside the line in the sand we call an event horizon, were such that the emmission of all detectable EM radiation were suppressed, the escape velocity could be less than the speed of light and we still could not see anything inside the line in the sand. There would just be no EM radiation emmitted that we have the ability to detect. (Notice, I did not say, no EM radiation emmitted at all, just none we can detect.) This is where the true value of a quantum theory of gravitation, most likely lies. Not just in eliminating the singularity but in connecting the gravitational field that exists inside that line in the sand.., the event horizon, with the spacetime and gravitational field that describes the dynamic interaction of massive objects we can observe, outside of that line in the sand. While both Newtonian mechanics and GR have been and are very successful within their own limitations, neither one includes an entirely conclusive description of the fundamental mechanism(s), of what we know of, as gravitation.