CEO, your Backend Server is a powerful machine.
It can output millions of pages and serves millions of users.
But it has one defect:
It needs a Developer.

CEO, your Web Application is powerful.
It downloads faster than light and carries more images than your son Instagram account.
But it has one defect:
It needs a Developer.

CEO, a Developer is very useful.
He can fix things on the fly and he can develop killer features.
But he has one defect:
He can think.

(from "General Your Tank Is A Powerful Vehicle" Bertold Brecht)