There’s the fixed and then there’s the unfixed. You can’t really talk much about the unfixed but you can talk about the fixed. If you have a fixed point of view about things you will be limited by that view. Because of that it will be difficult to see what you don’t see. And so, you won’t come to know about the unfixed. In the same way if you already know everything about everything it’s difficult to have a discussion with someone else. And when you both already know everything about everything then it’s absolutely impossible.