The ability to think thru the situation and get the best out of it is one of the most important quality one should try to get to become a great person. The situation can be different and the out come can be the same and the situation can be the same but the out come can be different. Which is right and which is wrong is always independent of the situations one is into. But when one's right is against the right of the other ; then starts the problems and hence the judgement one makes on a fraction of the second becomes too critical because it affects many other things. So to be a great leader quick decision making and quick thinking and selecting the best possible outcome out of many options becomes too important.