I am glad that you see that rules cannot be set in stone. They are always debatable, leave space for interpretation and have always exceptions. There is no "general" without the"particular". One requires the other and the less rules are set in stone, the more free people act and behave reasonable. Only the strict riders of the rules find that they are unquestionable, without alternatives, for they have no questions and think that others don't have or shall have them either. ;-)