And anyway, as soon as you can make a complete ancestral simulation (without knowing of any way to do so without giving consciousnesses/qualia/whatever to the simulated) you can be >99% that you live in a simulation no matter if you run anything yourself or not.

Do inaccurate ancestral simulations count for anything in this argument? Admittedly, I'm extrapolating from humans as I know them, but the combination of incomplete research, simulations modified for convenience and/or tolerability and/or to improve the story, and interest in what-if scenarios implies that even if you're a ancestor of an ancestor simulation creating civilization, you won't be that much like the actual ancestor.

Just for the fun of it, the Borgias on tv.