If we're in a simulation, it's going to have bugs. We're going to find them, and start exploiting them for things like superluminal flight. Then the day shift will come in, find us exploting the bugs and patch the system. Hopefully they have their act together and they can hot-patch (or pause, patch and resume) and avoid restarting the simulation. Even so, we'll be stuck at the wrong end of now impossible superluminal flights.