The more users' expectations prove right, the more they will feel in control of the system and the more they will like it.
Jakob NielsenClear content, simple navigation and answers to customer questions have the biggest impact on business value. Advanced technology matters much less.
Jakob NielsenA general principle for all user interface design is to go through all of your design elements and remove them one at a time.
Jakob NielsenThroughout this book, we've been evangelizing simplicity, but ironically, the practice of simplicity is not simple. It is easy to build a bulky design by adding layer upon layer of navigation and features; it's much more difficult to create simple, graceful designs. Paring designs to essential elements while maintaining elegance and functionality requires courage and discipline.
Jakob Nielsen