A Computer Shall Not Harm Your Work

When You Have To Choose Among Methods, Your Locus Of Attention Is Drawn From The Task And Temporarily Becomes The Decision Itself.

Imagine If Every Thursday Your Shoes Exploded If You Tied Them The Usual Way. This Happens To Us All The Time With Computers, And Nobody Thinks Of Complaining.

A Well-designed And Humane Interface Does Not Have To Be Split Into Beginner And Expert Subsystems.

As Far As The Customer Is Concerned, The Interface Is The Product.

Once The Product's Task Is Known, Design The Interface First; Then Implement To The Interface Design.