“To build a software that your users understand, capture the language of that users in a class diagram.”
“Users are a double-edged sword. They can help you improve your language, but they can also deter you from improving. So choose your users carefully, and be slow to grow their number. Having users is like optimization: the wise course is to delay it.”
“Validating Your User-Submitted Settings”
“Installing" is not a user goal!”
“If you work closely with your users, sharing their expectations and communicating what you're doing, then there will be few surprises when the project gets delivered. This is a BAD THING. Try to surprise your users. Not scare them, mind you, but /delight/ them.”
“There is no such thing as a social crack user.”