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http://www.usabilitynews.com/news/article1058.asp

Constantine, Larry L.
Usability News
2003

Abstract:

Usability can sometimes be more about belief than about evidence or engineering, with usability testing heading the list as a central tenet of the dogma of modern practice. One disgruntled participant in a recent conference even commented: 'It is unbelievable that an instructor at CHI would question the importance of user research and usability testing'. Yet, precisely because of its leading role, it is important for the profession to question the dogma of usability testing and for professionals to keep abreast of new developments and changing perspectives.