Last week I was just waiting for my student as usual at the table in my classroom which has as open and large a window as a picture window in front of my seat. The room looks out on the main street and large intersection that I can see through the window. And all of a sudden I heard a huge crashing sound ! I looked out the window and noticed that a random sedan driver had bumped into a mailman’s motorcycle from behind ! I was sort of panic-stricken at the sight of the accident terrible to me, but the men both seemed to agree with each other about not calling the police and separated quickly as if nothing had happened. (I assume there was no problem since the impact didn’t make a dent in the rear…) But hey! We need a sufficient argument in such a case !! Nothing wrong with it ?