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

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

An unlimited-length file name is a file. The content of a file is its own best name.

Users do not care about what is inside the box, as long as the box does what they need done.

If I am correct, the use of a product based on modelessness and monoty would soon become so habitual as to be nearly addictive, leading to a user population devoted to and loyal to the product.

Once the product's task is known, design the interface first; then implement to the interface design.

I am confident that we can do better than GUIs because the basic problem with them (and with the Linux and Unix interfaces) is that they ask a human being to do things that we know experimentally humans cannot do well. The question I asked myself is, given everything we know about how the human mind works, could we design a computer and computer software so that we can work with the least confusion and greatest efficiency?