I’ve always considered that to be what’s achieved by the LHC: smashing the fundamental building blocks of our universe together at extreme enough energies to briefly cause ripples through the substrate of said universe
As an example of an alternative analogy: think of how many bombs need to explode in your dreams before the "substrate" is "rippled". How big do the bombs need to be? How fast does the "matter" have to "move"? I think "reality" is more along those lines. If there is a substrate - and that's a big if - IMO it's more likely to be something pliable like "consciousness". Not in the least "disturbed" by anything moving in it.
https://profmattstrassler.com/articles-and-posts/particle-ph...
https://profmattstrassler.com/articles-and-posts/particle-ph...
Maybe. There are certainly ways to crash it today. But now let's go through some cycles of fixing those crashes, and we'll run it on a system that can handle the resource usage even if it slows down in the external reality's terms quite a bit. And we'll ignore the slash commands and just stick to the world interactions you can make.
After that, can you forcefully break out of it from the inside?
No.
It is not obligatory for systems to include escape hatches. We're just not great at building complex systems without them. But there's no reason they are necessarily present in all systems.
Another brain bender covering the same idea in a different direction: The current reigning candidate for BB(6) runs an incomprehensible amount of computation [1]. Yet, did it at any point "break out" into our world? Nope. Nor do any of the higher ones. They're completely sealed in their mathematical world, which is fortunate since any of them would sweep aside our entire universe without noticing.
The LHC is extremely impressive from a human engineering perspective, but it's nowhere close to pushing the boundaries of what's going on every second in the universe at large.