When a device as simple as a door has to come with an instruction manual—even a one-word manual—then it is a failure, poorly designed.

Attractive things work better.

We expert teachers know that motivation and emotional impact are what matter.

If you think of the product as a service, then the separate parts make no sense - the point of a product is to offer great experiences to its owner, which means that it offers a service. And that experience, that service, comprises the totality of its parts: The whole is indeed made up of all of the parts. The real value of a product consists of far more than the product's components.

Only the most sophisticated of beings can lie and cheat, and get away with it.

The current paradigm is so thoroughly established that the only way to change is to start over again.

Everyday people are not very good designers.