A concept of “Benefit of Inconvenience (BoI)” has recently attracted much attention as a novel design paradigm, and it has gained sympathy from a lot of people who question the excessive pursuit of conveniences in modern society. However, some of such sympathy is based on, for example, shallow nostalgic ideas that excessively beautify the past. In order to avoid such misunderstandings and misusing, some attempts to (re)define the concept of BoI in a clear and easy-to-understand manner have been made. However, even these (re)definitions still cannot eliminate undesirable misunderstandings and misusing of BoI concept. This paper clarifies causes of such problems of the former definitions and proposes a new definition of BoI that can solve the problems.