How do you explain what a "desktop" is to a completely, non computer savvy person?

A desktop is the screen that displays all the icons, folders and programs on your computer, correct?

So how would you go about explaining how to get there and what exactly it is to a non computer person?

I’ve been trying to explain to my dad what a desktop is over the phone but he doesn’t seem to get it. He keeps asking what a desktop is when I say, “go to the desktop.”