That isn't actually necessarily true though, I think. It should be perfectly reasonable to create a new character and arrange for a prison-bust, for example. And, for that matter, one part of imprisoning someone is that you usually let them out after some time. I'm not completely unconvinced. Of course, right now, it's impossible to create a prison, since you can't move someone's hearth fire.
"Object-oriented design is the roman numerals of computing." -- Rob Pike