Dr. Donald Norman is the self-proclaimed protagonist of unnecessary complexity in today's technological products.  It annoys him so much that his influence is felt today in many interfaces and usability methodology.  Dr. Norman holds a degree in psychology from both MIT and the University of Pennsylvania.  He became a college professor soon afterwards and became the chair of the cognitive science department at the University of California, San Diego.  As he developed a further interest in computing and user interfaces, Dr. Norman was employed by Apple Computer in the early 1990s.  Dr. Norman helped design the Power Macintosh and published four books around the same time.  His latest book, The Invisible Computer, is a requirement for design engineers and the second-most read book in its field.  Dr. Norman is also a principal of the Nielsen Norman Group, where he continues his research today.  When asked about his greatest accomplishment, Dr. Norman will reflect on the "power button" placement for the Macintosh keyboard.  It is a prime example of the small changes necessary for vast improvement in the product or user interface.
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  jnd.org: Don Norman's Website