You won't catch me giving clear lectures.

Scientists are always skeptics.

Everyday people are not very good designers.

I believe that robots should only have faces if they truly need them

The designer has an obligation to provide an appropriate conceptual model for the way that the device works. It doesn't have to completely accurate but it has to be sufficiently accurate that it will help in both the learning of the operation and also dealing with novel situations.

If you think the products don't match what you want from a product, don't buy it.

The world is complex, and so too must be the activities that we perform. But that doesn't mean that we must live in continual frustration. No. The whole point of human-centered design is to tame complexity, to turn what would appear to be a complicated tool into one that fits the task, that is understandable, usable, enjoyable.