I really like Penrose's new theory that the singularity is a torus within a bubble of normal space inside the event horizon. The point-like singularity predicte

I really like Penrose's new theory that the singularity is a torus within a bubble of normal space inside the event horizon. The point-like singularity predicted by GR seems obviously implausible, it makes more sense for it to be smeared throughout some volume of space. If I understand correctly, he proposes that the singularity is a compact object rotating about the center so fast that it's more or less a solid torus. Intuitively, it also makes sense that space within a black hole could be more or less normal. Or at least have a consistent curvature that approximates normal space. Conversely, I find the notion of space-time equivalence as illustrated by Penrose diagrams to be quite unconvincing. All we really have is high order approximations of how GR might behave in extreme conditions. I believe that if it ever becomes testable, we'll see some kind of limit to how far space can translate to time. Or that time is more complex than we think. No one really knows for sure, but it's a lot of fun to speculate about!