Lots of places, but here's one And I'm sorry but my initial suspicion of using Kruskal coordinates has only grown stronger over time - if we redefine space and time parameters to avoid math singularities we cannot then substitute those new parameters for our everyday usage. t and r have a physical meaning. Constant t in the Kruskal diagram is represented by straight lines passing through the origin...therefore you can see that connecting Region II with Region I is simply impossible. The entirety of the black hole is in the infinite future of any point outside of it, which means it does not and will never exist... Please Register or Log in to view the hidden image!