A well-designed and humane interface does not have to be split into beginner and expert subsystems.

I hate mice. The mouse involves you in arm motions that slow you down. I didn't want it on the Macintosh, but Jobs insisted. In those days, what he said went, good idea or not.

A computer shall not waste your time or require you to do more work than is strictly necessary.

The system should treat all user input as sacred.

A computer shall not harm your work or, through inaction, allow your work to come to harm.

As far as the customer is concerned, the interface is the product.

A well-designed and humane interface does not have to be split into beginner and expert subsystems.