This is a familiar story about four people named Everybody, Somebody, Anybody, and Nobody.

There was an important job to be done and
Everybody was sure that Somebody would do it.
Anybody could have done it, but Nobody did it.
Somebody got angry about that because it was Everybody's job.
Everybody thought that Anybody could do it, but Nobody realised that
Everybody wouldn't do it.
It ended up that Everybody blamed Somebody when
Nobody did what Anybody could have done.

What went wrong? Please do not get confuse…