Nice HCB post. I have seen his famous principle of the decisive moment explained as the optimal point in time to make the shot, when in a given scene. Things may start to come together and converge towards a possible shot... he was able to, first of all identify potential places where a scene could likely occur and then wait until that exact time when everything reaches its apogee ... and THAT is the decisive moment. Interesting idea. Personally i like his very surrealist ones the best. He did some photo journalism quite often and they are not all that great. But sometimes he just nailed it. He carried a camera all the time and could sometime disappear in the street if he spotted anopportunity