Well, no, it's not obvious at all. It's a neat conjecture that may be true in some cases and false in others. I mean, for all we know there may be castles where

Well, no, it's not obvious at all. It's a neat conjecture that may be true in some cases and false in others. I mean, for all we know there may be castles where staircases spiral a certain way because of some beliefs about the devil. It's fine to say that we don't have enough information to say anything definite about the subject.