In the landscape metaphor, the screen is just a viewing pane. When you look through it, you see the actual interface lying beyond. And Under The Surface 27. Modern computing is based on an analogy between computers and file cabinets that is fundamentally wrong and affects nearly every move we make.
Computers are fundamentally unlike file cabinets because they can take action.
It is no good for non-programmers. It never was, and was never intended to be. If you have three pet dogs, give them names. If you have 10,000 head of cattle, don't bother. Nowadays the idea of giving a name to every file on your computer is ridiculous.