The outsider sees most of the game? I think it was not completely right.

For example, while two people are playing chess, the outsider may know where the next chessman to be played is the best. In this way ,the outsider sees most of the game. But what he sees was surface, and it was just "In theory, you should play the next chessman right there." However, the hearts of people are not that simple, they have all kinds of feelings and you can't just say "in theory".

The outsiders don't know the deep feelings of the game players, even the one who is very good at guessing what the other people thinks can't do it.  The suggestions from the outsiders, no matter how thorough they thought they have thought, it was just "in theory".

So don't be conceited when you think you have known what the others were thinking, because you will never know it truly deep.