Well, usually. Our doorbell, which was non-functional from when we moved in until we moved out eight years later, and which we were always planning to fix 'nex

Well, usually. Our doorbell, which was non-functional from when we moved in until we moved out eight years later, and which we were always planning to fix 'next week', is a good counterexample. Not that we'd get mad at people for ringing the doorbell, but we were very glad that people usually figured out they had to knock.