As I mentioned before, I thought you were arguing the orthodox simulation argument, rather than one where the simulations are created from within our own universe. That would not necessarily increase the complexity of the model, but it’s untenable for its own reasons.
For one thing, it’s far from given that any civilization would ever want to simulate the universe at a previous point; the reasons you provided before don’t remotely justify such a project; it’s not a practical use of computing power. For another, assuming you’re only simulating small fractions of the history of existence, the majority of all sentient beings in the universe would not be ones in a simulation. In fact, you would have to defy a number of probable assumptions about our universe to fit as much universe space and time in the simulation as existed outside it.
As I mentioned before, I thought you were arguing the orthodox simulation argument, rather than one where the simulations are created from within our own universe. That would not necessarily increase the complexity of the model, but it’s untenable for its own reasons.
For one thing, it’s far from given that any civilization would ever want to simulate the universe at a previous point; the reasons you provided before don’t remotely justify such a project; it’s not a practical use of computing power. For another, assuming you’re only simulating small fractions of the history of existence, the majority of all sentient beings in the universe would not be ones in a simulation. In fact, you would have to defy a number of probable assumptions about our universe to fit as much universe space and time in the simulation as existed outside it.