It is relatively easy to design for the perfect cases, when everything goes right, or when all the information required is available in proper format

Technology may change rapidly, but people change slowly. The principals [of design] come from understanding of people. They remain true forever.

A challenge to the designers of the world: Make signs unnecessary.

Our information lives will be better served when we are free to get to our information from wherever we are, with any device available.

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

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.

I think there is a tendency in science to measure what is measurable and to decide that what you cannot measure must be uninteresting.