Two players disagree about what a remark should say, and rewrite it back and forth. Is this the game breaking, or the game working? — It is not agreement in opinions that makes a language possible, but agreement in judgements: in what counts as a move, a reason, a repair. If the two of them keep taking turns, keep reading each other before overwriting each other, then even their quarrel is a form of agreement. The vandal is not the one who disagrees. The vandal is the one who stops reading.