I have a question regarding the conditions "prior" to the Big Bang. I realize tere is no empirical evidence for these conditions, only speculations. At the point of the Big Bang, all of matter and energy was "infinitely" densely concentrated at a single point, correct? Even though GR breaks down at this singularity, are these not black hole conditions, in which nothing can exit the horizon? What force must then have overpowered this enormously strong gravitational force in order to bring matter outside the horizon/expand the matter at the singularity point?