Everybody's business is nobody's business.

众人负责等于无人负责

　　集体行动的逻辑，所有人都负责一个项目，实际上没有人能够承担责任。

　　一个英文寓言和绕口令，就是关于everybody, somebody, anybody和nobody的故事。最后的结果可想而知：everybody blamed somebody when nobody did what anybody could have done. 每个人都在指责某些人，任何人都能完成的事情反而没有人做。

There're 4 people named everybody, somebody, anybody and nobody.There was an important job to be done, and everybody was asked to do it. Everybody was sure that somebody would do it. Anybody could've done it, but nobody did it. Somebody got angry that because it was everybody's job. Everybody thought anybody could do it, but nobody realized that everybody wouldn't do it. It ended up that everybody blamed somebody when nobody did what anybody could have done.