Most of traditional studies on information systems aim at seeking highly satisfactory information in a one-time or small number of uses of a system or service, and never take it into account that the user would feel tired of the same system or service after they have used it many times over. In order to solve this problem, this study has modeled the human nature of being tired of the same thing and enabled the measurement of the degree of such boredom. This paper shows our approaches on several fields, and we discuss how we can construct better information systems for continuous use.