Quality, Usability, and the Ontological Argument for the Existence of God
http://www.stcsig.org/usability/newsletter/0010-ontological.html

Marion, Craig
Usability Interface
2000

Abstract:

I’ve been involved with the usability movement for about five years. It’s occurred to me more than once: what’s the difference between 'usable' software and just plain 'software that works the way it’s supposed to?' The answer—for both quality and usability, I believe—hinges on the meaning of 'works the way it’s supposed to.' Once, processes just evolved. They were changed sometimes, but they were never systematically evaluated. Having standards applied made them quality processes.