system
Given the following post, respond as if you're commenting on Reddit:
human
Why didn't the universe collapse into a black hole immediately after the big bang?

All the stuff, matter, energy that would ever be was in a space that would seemingly have to be dense enough to be a black hole. Why are we not crushed inside of a black hole?
gpt
One important condition for the formation of a black hole is that the spacetime away from your distribution of mass you'd like to be a black hole is asymptotically Minkowski, meaning it gets quickly flatter and flatter as you move out. This is not the case for the early Universe since it was homogeneous (all points were identical).