Degrading navigation system as an explanatory example of “benefits of inconvenience”

Even though artifacts continue to improve, they are causing some problems from the viewpoint of human-machine systems. To satisfy interactions between artifacts and users, designing a humaninterface is crucial. In the research field of humaninterfaces, researchers have developed convenient artifacts. This report defines "convenient" for situations or tools when "users do not have to do many things," and "users do not have to spend much time." However, since convenience causes unexpected problems, we focus on inconvenience and its benefits. We are examining the benefits that are produced by introducing inconvenience to the design of humaninterfaces. As one example of a humaninterface, we employ Navigation System and introduce "Degrading Navi" that includes inconvenience; the trails being followed disappear, so users need to recall them when they use Navi again. This paper examines whether Degrading Navi has more benefits than Normal Navi. The result suggests that users remember landmarks more precisely when they passed through using Degrading Navi than Normal Navi. New benefits, caused by introducing inconvenience to the design of humaninterfaces, might expand user ability.