Imagine a box with two characteristics:
- It is indestructible, it can't be deformed or torn apart.
- It can shrink to any precise size regardless of the opposite forces.
Let's assume the box starts with a size of 10 m³ and contains gas molecules. As you shrink the box, molecules increasingly push against the walls of the box. At some point, the matter in the box is so compressed that it becomes a black hole.
I'm thinking that since the matter went from trying to expand to generating its own gravity toward a compact point, there must be a point where the matter was neither trying to expand nor was it a black hole, so it was in a neutral state.
Is this assumption wrong? If so, what does the matter go through before being a black hole? Is there even a point where an object goes from not being a black hole to being a black hole?