This does not imply that the simulation is run entirely in linear time, or at a constant frame rate (or equivalent), or that details are determined a priori instead of post hoc. It is plausible such a system could run a usually-convincing-enough simulation at lower fidelity, back-calculate details as needed, and modify memories to ignore what would have been inconsistencies when doing so is necessary or just more useful/tractable. ‘Full detail simulation at all times’ is not a prerequisite for never being able to find and notice a flaw, or for getting many kinds of adequate high level macroscopic outputs.
In other words: If I want to convince you something is a real tree, it needs to look and feel like a tree, but it doesn’t need an exact, well-defined wave-function. Classical approximations at tens of microns scale are about the limit of unaided human perception. If you pull out a magnifying glass or a scanning electron microscope, then you can fill in little pieces of the remaining whole, but you still aren’t probing the whole tree down to the Planck scale.
This does not imply that the simulation is run entirely in linear time, or at a constant frame rate (or equivalent), or that details are determined a priori instead of post hoc. It is plausible such a system could run a usually-convincing-enough simulation at lower fidelity, back-calculate details as needed, and modify memories to ignore what would have been inconsistencies when doing so is necessary or just more useful/tractable. ‘Full detail simulation at all times’ is not a prerequisite for never being able to find and notice a flaw, or for getting many kinds of adequate high level macroscopic outputs.
In other words: If I want to convince you something is a real tree, it needs to look and feel like a tree, but it doesn’t need an exact, well-defined wave-function. Classical approximations at tens of microns scale are about the limit of unaided human perception. If you pull out a magnifying glass or a scanning electron microscope, then you can fill in little pieces of the remaining whole, but you still aren’t probing the whole tree down to the Planck scale.