From Jef Raskin’s Summary of The Humane Interface:
… The message that The Humane Interface brings, aside from its methodological specifics, is that major improvements in interface design are both profitable and moral – profitable because a good interface is cheaper to implement, is more productive, is easier to maintain, has lower training costs, and requires less customer support than a bad interface – moral because it brings smiles to the faces and erases furrows from the brows of users. One can do good and yet do well by rethinking interface design.
Right on. I need to read Raskin’s book.