How willing is everyone to accept the possibility of quest failure? From a realism point of view, it's surely only reasonable that going around killing people could mess up some of one's plans in life, and the fact that it doesn't in Skyrim is part of what makes people complain that one's actions in Skyrim have little real effect on the world. On the other hand, to play for a couple of hundred hours and then find out that one messed up a quest inadvertently, right at the beginning, is frustrating. How would people like this to be handled?