Charles L. Mauro, "Is a high priced usability 'Guru' a good investment?" TaskZ.com, 6 Aug 2001

When taken in this context, even the best usability Guru is unlikely to have a suitable understanding of your customer profile and their critical cognitive structures, such as prior learning, experience with other software, and motivation. Therefore, even though usability Gurus may have the best intentions in their criticisms, there is absolutely no guarantee that their recommendations will improve customer acquisition, retention, or migration. Granted, some design flaws are so obvious that they deserve a bit of rant and rave; but such reviews should always leave the motivation of the development team intact. It should never be a humiliating experience in front of the boss and the boss's boss. Want to kill UCD for the current generation of web development teams? Make them think that everything they did was stupid and wasteful.