We learn to use language and communication as little children, although it is a vast structure of rules, implications, and intuitive leaps. But there is always more to know about the way we communicate, that we really already knew deep down, but never knew how to explain. Tom Scott shares certain assumptions that people communicating with each other start out with. However, you and I and everyone else have known people who don't follow these guidelines. Communicating with those people is strange, and then difficult, and then you just give up. Those are the exceptions that confirm the rules.