Donald Norman

User-centered design means working with your users all throughout the project.

Market segmentation s a natural result of the vast differences among people.

Also note that invariably when we design something that can be used by those with disabilities, we often make it better for everyone.

We know: of course, with regard to the market and similar social structures, a great many facts which we cannot measure and on which indeed we have only some very imprecise and general information.

The judge decided in this case that both the state and the defense would have the opportunity to respond to certain kinds of press. This is one such instance.

Measure what is measurable, and make measurable what is not so.