There is an old conundrum first presented by Barkley that said:
If a tree falls down in a forest does it make a sound if no one is present to hear it?
Scientifically there's the matter of fact argument it's not possible to know because the scientific method requires empirical analysis from our own senses (or peers).
But if knowledge is not concerned with irrefutable facts regarding 'being' (what constitutes the existence in relationship to our senses and mathematics) and relationships to other things, then from extrapolation of faith of consistency in the system (what we assume is a shared universe) you have a good guess if it's going to make the sound.
But an intuitive guess is not always the truest or most accurate even though we like to use Occam's Razor to guide us in making new a hypothesis and testing it (which is commonly misinterpreted as "the most simple explanation is often the right one").
Sometimes video game developers can make workarounds that we could overlook if we are living in a simulation, such as only rendering objects on the screen when we walk enough distance up to them. If the world is a simulation, it is possible some shortcuts could be taken so what's out of view doesn't function based on what we would think, like for instance if everyone lives in their own universe data not 'rendering' until we find it, although I read briefly about quantum entanglement and how two particles have states relative to each other (however I don't know too much about physics).
