Designers
"Users are not designers."
Jakob Nielsen, Usability Engineering, p. 12
"Designers are not users."
Jakob Nielsen, Usability Engineering, p. 13
"All of us who work on web sites have one thing in common--we're also web users. And like all web users, we tend to have strong feelings about what we like and don't like about web sites... when we're working on a web team, it turns out to be very hard to check those feelings at the door."
Steve Krug, Don't Make Me Think, p. 133
"Ironically, the strength of... the often brilliant designers of high-tech products and systems today is also partially responsible for their downfall: since they have so much scientific and engineering expertise, they tend to think that everyone knows as much about technology as they do."
Kim Vicente, The Human Factor, p. 34.
"There's something very odd going on here. If designers made completely unrealistic assumptions about the physical world when designing technology, then we would blame them (and likely sue them) for technical incompetence. Yet when they make grossly unrealistic assumptions about human nature... we don't blame the designers, we blame the unfortunate people who are just trying to do what the design requires."
Kim Vicente, The Human Factor, p. 45.