Abstract
At every scene in today's life, people have to have the point of contact with systems. Human error, a trivial mistake, careless operation or misunderstanding is reported that they caused serious problems or large accidents. Were these 'a trivial mistake' a true cause? May the interface be easy to bear misunderstanding or be difficult to comprehend? Generally projects are supposed to be on the supplier-side. "User interfaces" are considered to be designed and developed by supplier-side. However, it would not be able to decrease human errors? The demand to the advanced system rises, it would become more important the excellent user interface. To respond or be sufficient to this, user interface should be examined to quality. Project management is the research object of interdisciplinary, although this short paper is the introduction of a recognition science. I try to share the important consideration point with regard to the system quality.
