Can't help imagining that tunnel of light being the backdoor in or out. And heavy DMT inhalation = breaking through the 'filament' into a place that is 'really, real' or 'more real than this reality' hmm. The closed system model has a lot of implications too, such as allowing for some degree of free will, because why else would it be closed? I don't usually like the idea of the universe as a simulation because it still doesn't explain a lot, like are you trying to say we're stored in a virtual machine? I think this is a flawed idea because a 'machine' gives off the idea of rigidity and so it could easily break down or be damaged which would cause us to disappear and that is just ridiculous when considering the scale of the universe. Still, the use of the idea of a 'simulation' is a decent model to use when imagining what's out there when considering our limited understanding, or bottleneck of information processing.