Can plot-line spoilers ever be used for good, rather than evil? One enterprising teacher in a Belgian school is making the case. According to a thread on French-language site, DansTonChat, around three-quarters of this math teacher's class are watching Game of Thrones. So, when students start to act out, the teacher, who knows all of George R.R. Martin's books inside out, simply picks up his pen and starts to write down the names of characters who will die in forthcoming episodes - even detailing the method by which they are dispatched, unless the hubbub settles. "There's been a religious silence during the last lesson", said the poster. We kneel before you, Monsieur.