Hi, not sure if you're still reading this, but I thought some more about your question. It makes me realize, computers-in-the-simulation aren't really importan

Hi, not sure if you're still reading this, but I thought some more about your question. It makes me realize, computers-in-the-simulation aren't really important in my argument. What really matters is that the people in the simulation discover some way of making observations about microscale events. It could just as well happen that, say, they make many observations of sterile petri dishes and eventually notice "soft errors" in the petri dishes (e.g. spontaneous infection occurring due to real cosmic ray hitting simulating computer). So the inhabitants move their petri dishes into a vault, etc., and check whether that was enough to protect the petri dishes. I think computers are probably the best way to quickly get the idea across, but it could definitely generalize.