Jef Raskin's The Humane Interface

Tasks become habits. No modes, only chording. Only one way to do things. No warning screens, everything is undoable.

Reliable. Everything saves automatically. Content resistant to crashes.

Efficient and simple. Tasks don't take time to perform. Tasks don't take time to learn.

No icons. Purely text.

Zooming UI. No filenames.

No applications. Only commands.

Well tested.

Visually attractive.

You forgot the last one, faggot:

Doesn't exist, and never will.