I assume that if a statistically significant number of people noticed that they were trying sympathetic magic and it was working, then the simulation would have to be restarted or tweaked since it could alter the history of the world in significant ways.
We’re already living in a world where huge numbers of people believe sympathetic magic is working.
We’re already living in a world where huge numbers of people believe sympathetic magic is working.
How many of them wouldn’t believe it if it wasn’t working?