Not sure if this follow up can be answered, but I'll give it a whirl. If there were conflicting information between an older novel and a more recent sourcebook, for example, which would take precedence? Is there a structure or ranking to know which (art, sourcebooks, novels, etc.) would override the other? Obviously we can ask here in these forums, but if there's a brief ranking that is used as a guide, it just cuts down on questions. :)