Abstract
This paper discusses the issue of reliability and the need to move away from the traditional definition of reliability to trust to respond to the quickly growing diversification and personalization and the increasing changes. The traditional reliability as defined by reliability engineering is developed for mass production so that it is a quantitative evaluation using statistical approach. Thus, their model is fixed and it is an open loop approach. And humans are treated just as elements in the system and no consideration as a human was given to a user. The new emerging reliability is called trust and its model is adaptive and it is a closed loop approach with due consideration to a user as a human. This is because a user is the only person who can really understand what is happening now and can make a decision to respond to such frequent and extensive changes of the situations and the contexts. Trust calls for more communication and collaboration and the greatest difference between reliability and trust is although reliability does not grow, trust does
