"Readers always seem to think that the author has some control over the design of their books." — Donald Norman

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

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

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.

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