Do we know the magnitude of gravitational force needed to violate the Pauli exclusion principle? Also, I my research has told me that violating the principle still isn't enough to turn the fallen star into a black hole. It could still become a neutrons star, so if that is the case, what magnitude of force is strong enough squeeze all matter around it to a gravitational singularity which is infinitely dense, with zero volume? Also, I have been thinking. Does a black hole necessarily need to be a collapsed gravitational singularity. Couldn't it just have enough mass for light not to escape it?