I have a young acquaintance who suspects that we are living in a simulation. Well, in a way this is most certainly true. All that we know concerning reality are representations assembled by the brain from stimulation of sensory extensions. Our eyes, our ears, our fingertips, are antennae, and the body itself is simply an extremely sophisticated support system for a nodule of Awareness.
However it "is", is the way it has always been, and while knowing how "it is" doesn't change "how it is" our surmises do influence our behavior.
And this behavior in regard to "reality" is rather like a fish in a goldfish bowl. We have liberties of imagination. Imaginings will influence our scurryings but as for the bowl: as "it" was in the beginning, "it"is now and "it"ever shall be.
Sum, Ergo Cogito