prettyveela has put up a poll
here asking people to pick a side in various HP canon conflicts. As usual I have trouble actually picking a side, but I did eventually vote in all of them. What I keep thinking about after doing it, though, is not which side I chose but exactly why I picked one or the other. All the situations are so different that although it seems like it should be easy to come up with rules for all of them, that's not what happened. Reading the comments it wasn't usual to for instance, see two situations judged in ways that seemed completely opposite (I do it too). In situation A X acted with malice but Y was really stupid! So Y is at fault. But in situation B Y was stupid but X acted with malice. So X is at fault.
( So I of course have to obsess on my own reactions. )