“Summary: Discusses how prototyping your user interface can help prevent costly mistakes and miscalculations. Even the brightest people make mistakes. This is especially true for teams of people. Somehow, as a project moves forward, small assumptions and well-intentioned but poor decisions accumulate, turning hours of work into a lousy user experience. The smart teams eliminate their mistakes before they ship by using a technique called UI prototyping. Combined with usability studies, prototypes keep teams headed in the right direction.”