That's a long standing problem with rules: Once you try to nail down a subject, people find loopholes. The harder you try to define things, the more loopholes you create.

Being a moderator here, forced me to think more about how rules work. Up until that point, I thought it was easy, as most people expect. It isn't easy at all. For example, everybody likes free speech, but I believe that I can prove that truly free speech isn't even possible, especially on line. The proof is too long to write out, though.