I guess where we disagree is in our view of how a simulation would be imperfect. You’re envisioning something much closer to a perfect simulation, where slightly incorrect boundary conditions would cause errors to propagate into the region that is perfectly simulated. I consider it more likely that if a simulation has any interference at all (such as rewinding to fix noticeable problems) it will be filled with approximations everywhere. In that case the boundary condition errors aren’t so relevant. Whether we see an error would depend mainly on whether there are any (which, like I said, is equivalent to asking whether we are “in” a simulation) and whether we have any mechanism by which to detect them.
Everyone has different ideas of what a “perfectly” or “near perfectly” simulated universe would look like, I was trying to go off of Douglas’s idea of it, where I think the boundary errors would have effect.
I still don’t see how rewinding would be interference; I imagine interference would be that some part of the “above ours” universe gets inside this one, say if you had some particle with quantum entanglement spanning across the universes (although it would really also just be in the “above ours” universe because it would have to be a superset of our universe, it’s just also a particle that we can observe).
I guess where we disagree is in our view of how a simulation would be imperfect. You’re envisioning something much closer to a perfect simulation, where slightly incorrect boundary conditions would cause errors to propagate into the region that is perfectly simulated. I consider it more likely that if a simulation has any interference at all (such as rewinding to fix noticeable problems) it will be filled with approximations everywhere. In that case the boundary condition errors aren’t so relevant. Whether we see an error would depend mainly on whether there are any (which, like I said, is equivalent to asking whether we are “in” a simulation) and whether we have any mechanism by which to detect them.
Everyone has different ideas of what a “perfectly” or “near perfectly” simulated universe would look like, I was trying to go off of Douglas’s idea of it, where I think the boundary errors would have effect.
I still don’t see how rewinding would be interference; I imagine interference would be that some part of the “above ours” universe gets inside this one, say if you had some particle with quantum entanglement spanning across the universes (although it would really also just be in the “above ours” universe because it would have to be a superset of our universe, it’s just also a particle that we can observe).