✅ Answers
Answerer 1
I’ve been searching for why he personally didn’t think they existed. The best I could come up with was that he couldn’t articulate why he didn’t believe in them. So, he just didn’t. I guess he thought they were absurd in the same way he thought that God didn’t play dice. His personal preferences clashed against the conclusions that followed from his ideas, and we’d have to leave it at that.
Answerer 2
I’m not sure that’s correct. The equations for general realtivity lead you to a black hole solution if you construct the problem correct. What Einstein did find troubling is that one of the earliest knowon solutions to the field equations, the Schwarzschild metric, leads to a singularity at the origin of coordinates. This is because Schwarzschild assume a point mass. The singularity thoug, indicates that physics breaks down and thus the solution can’t be a physically meanigful one in the region near the point mass. Black holes gget around this problem as the signularity, which is still there in the solution, is “hidden” from the universe by the event horizon. This is a hypersphere in space-time surrounding the singularity that is defined by the proper distance at which light cannot escape from the curvature of the singularity. What is “inside” the event horizon cannot be communicated to space-time. So the laws of physics are preserved even with a singularity present in the solution to the field equations.
Answerer 3
because he wisely thought that just because his mathematics predicted them, nature may not fit the maths at extreme condition. Rather like newtonian maths fits physics well at normal speeds but you need to use better maths (relativity at high speeds and energies)