Say we go with that thought experiment saying if it's possible to simulate our observable universe, we're likely to be in such a simulation. When some of our b

Say we go with that thought experiment saying if it's possible to simulate our observable universe, we're likely to be in such a simulation. When some of our better theorists try to model the realities of trying to simulate our reality, they seem to keep bumping into hard walls. That old 'not enough atoms in the universe' thing. This brings to mind the possibility that we are being simulated from a much different, maybe more complex universe with its own physics (and probably a whole lot more matter/energy). How much knowledge about such an origin point - or next ladder rung up - can we reasonably expect to derive from our ability to measure what's observable within our own simulation?