Quantum is weird. If we are in a simulation, that would explain a lot of that, because the quantum effects we see are actually just light simulations of much deeper mechanics.
As such, if we were simulating a universe, there’s every chance that we may decide to only simulate down to individual atoms. So the people in the simulation would probably discover atoms, but then they would have to come up with their own version of quantum mechanics to describe the effects that we know come from quarks.
The point is that each layer may choose to simulate things slightly lighter to save on resources, and you would have no way of knowing.
I don’t know what language you natively speak, but I would love to learn! Pm me if you’re interested and we can call and just talk. That’s typically the best way to learn the finer details of a language, just speak with a native speaker regularly. As far as grammar and vocabulary, though it doesn’t always show in my comments, I’m quite adept.I also used to be a tutor for a ton of people, although I never taught anyone English, so I’m quite good at teaching and communicating as well.