Idk, I don't think most scifi pushes the envelope of what we can imagine, rather it provides a convenient escape to galaxies less incomprehensible than the bewilderment of earth where the author can make a point about spacewar and unstoppable mindless empires.

shrugs

Scifi (like any other genre) needs to continually reaffirm its association with creativity, not assume because paper thin character types are fighting spacewars for feudal empires and space corporations that it counts as pushing the envelope of our imaginations.

/end side rant

He bathes in the black sun

I've heard that 'our reality is made of math' before. Does this mean that we do in fact live in a simulation, even if that simulation wasn't necessarily programmed by 'higher dimensional' beings?

If that is the case, could we conceivably 'hack' the universal code and unlock cheat mode?

thinking about the universe is already traumatizing

Where does it end? How are we floating? What if we fall? Where does it come from?

I don't think about that a lot so it doesn't give me anxiety

Plus, black holes may do contain universes. This year there was some evidence pointing that our universe is actually trapped inside one... ref: https://futurism.com/universe-trapped-inside-black-hole