Intuitive systems are usable systems. Design guidelines advocate intuitiveness and vendors claim it--but what does it mean for a user interface, interactive system, or device to be intuitive? A review of the use of the term "intuitive" indicates that it has two distinct but overlapping meanings, namely intuitiveness based on familiarity and…

Zoomable user interfaces (ZUIs) have received a significant amount of attention in the 18 years since they were introduced. They have enjoyed some success, and elements of ZUIs are widely used in computers today, although the grand vision of a zoomable desktop has not materialised. This paper describes the premise and promise of ZUIs along with…

Expert operative information is a prerequisite for any form of surgical training. However, the shortening of working hours has reduced surgical training time and learning opportunities. As a potential solution to this problem, multimedia programs have been designed to provide computer-based assistance to surgical trainees outside of the operating…