"Once upon a time, were four individuals called Everybody, Somebody, Anybody and Nobody. There was a very important task to be carried out and Everybody was asked to handle it. Everybody was sure Somebody would take care of it. Anybody could have done it. But it was Nobody who did it. Somebody was furious because it was Everybody's job. Everybody thought Anybody could have done it. And Nobody had no doubt that Somebody would do it. Finally, Everybody blamed Anybody because Nobody did what Somebody could have done." (Psychologies, translated by me)
You wouldn't want story to repeat itself, would you? This is the day you make sure it doesn't!