>>13681875Elsewhere, when calculations result in infinity/singularities, it is regarded as an absurdity and a sign that our understanding is incomplete. (this is part of why relativity and quantum mechanics are incompatible: when combined they predict subatomic singularities EVERYWHERE)
For a long time, the black hole singularity was thought of the same way. Until we observed black holes through telescopes!
But still, since any interaction beyond the event horizon is by definition impossible, we still don't know if a singularity is real.
Loop quantum gravity theorists believe that the lower limit beyond which nothing can shrink is a hard limit. As if the planck length is the "pixel size" of reality.
Thus a collapsing star cannot reach singularity but instead rebounds and expands.
Because inside an event horizon time slows almost to a halt, however, (from external perspective) we do not witness this.
