That's exactly what I mean. We don't know enough about magic to say what Harry or Voldemort's capabilities are -- the whole thing is a black box. It's not a satisfying answer to the puzzle (for me) and not much of a testimony to "rationality" as a way of thinking at all -- as presented this is about knowing genre conventions, not about superior or inferior thinking. All of the AI Box solutions I saw were much more pro-"rationality" by my lights.