But is it really? I would say that the moment's importance as a "moment" is illusory. Take for example this famous painting, what's the most striking part of it?
This, right?
But once you've seen the painting you cannot unsee everything that surrounds this central image. The fact that it is located very dissonantly off center, the fact that it is the only thing reasonably in focus and also the only thing with somewhat correct proportions, the fact that how even though you don't know a single reason for the anguish it is the only thing that makes any sense at all. I mean, the face is totally iconic and also brilliantly captures the tone of the entire painting, but it doesn't exist in a vacuum. If you show this to someone not familiar with the painting, it will be basically meaningless, they might even interpret it as a joke…