For example, you and I plan to meet at a theater for the 9 p.m. movie. We have constructed a plan to cooperate in a joint venture. Each knows of the other’s commitment to the task. But you know I can be late. So you told me to be there on time, and I know you are frustrated with my tendency to be late. And you know I know of your displeasure with my tardiness. When I arrive in plenty of time for the movie, you smile. I know you are pleased at my punctuality, and you know I see and understand your pleasure. Not a single word need be said