Meanwhile in rationality heaven:

"But what if you do an anti-simulation. That is, what if you possess or are integrated with a supercomputer that is capable of running powerful simulations, and a uFAI has assigned some probability to being in a simulation run by you, but what you actually do is run a simulation that (due to reasons of historical fact) the uFAI would expect to find itself a part of, but actually you leave out the uFAI and either put an FAI in its place or just nothing."

Found on https://anjel.blog/?p=144