Something to think about:
https://www.stevepavlina.com/blog/2010/12/your-simulated-reality/
I think this took place in my apartment back when I was in college:
I was doing something like throwing a ball out the door of my room so that it bounced around and wound up bouncing down the stairwell. Some sort of thing that I could tell what the ball was doing by the sounds of what it was bouncing against.
After spending so much time studying physics, it was pretty amazing to me how the ball managed to figure out its own path without needing to solve any complex equations or even be visually observed by anyone. The ball, hallway, stairs, etc. all did their own parts without even needing a calculator (much less a supercomputer).
I said to my roomate, Jay, “Isn’t it amazing how reality interacts with itself?”
He replied, “It’s almost as if it has its own existence outside of our minds.”