I think a successful company is one where everybody owns the same mission. Out of necessity, we divide ourselves up into discipline groups. But the goal when you are actually doing the work is to somehow forget what discipline group you are in and come together. So in that sense, nobody should own user experience; everybody should own it.

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

If you're more susceptible to interruption, you do more out of the box thinking.

We delude ourselves if we believe that skilled behavior is easy, that it can come about without effort. We forget the years of tuning, of learning and practice it takes to be skilled at even the most fundamental of human activities: eating, walking, talking, reading, and writing. It is tempting to want instant gratification - immediate expert performance and experiential pleasure - but the truth is that this primarily occurs only after considerable amounts of accretion and tuning.

Simplicity design axiom: The complexity of the information appliance is that of the task, not the tool. The technology is invisible.

So what does a good teacher do? Create tension - but just the right amount.

Knowing how people will use something is essential