In the university, professors make up artificial problems. In the real world, the problems do not come in nice, neat packages. They have to be discovered.
Donald A. NormanThe argument is not between adding features and simplicity, between adding capability and usability. The real issue is about design: designing things that have the power required for the job while maintaining understandabili ty, the feeling of control, and the pleasure of accomplishment.
Donald A. NormanIn design it is important to shoe the effect of an action. ... Feedback is critical.
Donald A. NormanThe designer shouldn't think of a simple dichotomy between errors and correct behavior; rather, the entire interaction should be treated as a cooperative endeavor between person and machine, one in which misconceptions can arise on either side.
Donald A. NormanNo product is an island. A product is more than the product. It is a cohesive, integrated set of experiences. Think through all of the stages of a product or service - from initial intentions through final reflections, from first usage to help, service, and maintenance. Make them all work together seamlessly. That's systems thinking.
Donald A. Norman