Great episode.

I'm tempted to believe in reality, some kind of "mutually assured destruction" scenario would occur.

If I was to create a simulation, I would add in a recursive condition wherein the detection of another simulation would crash the system.

But the theme the episode really touched on was whether it was right to tell another the truth about reality. Maybe that reality isn't another layer up, but that God exists, or maybe not.

Assuming you found out we really were in a simulation, what is the right thing to do? Force everyone to learn the truth? Hide your knowledge of it?

If you thought: "I can tell the people who want to know", you've just created a cult.

Personally, I'm convinced we are not in a simulation. But that's only assuming the level above us is somewhat similar (a universe that started with a big bang and formed stars and planets and evolution etc).

Think of it this way: an advanced society would need to evolve more than us, meaning more filters to pass before achieving this kind of power. This means unlimited power and unlimited processing power.