Which of the following is NOT one of the five principles of service design thinking?

In service design thinking, the principles provide a framework that guides the development and implementation of services to ensure they are effective and meet user needs. Among these principles, user-centered, evidenced, and holistic are all key elements in creating services that are designed with the user in mind, backed by data and insights, and consider the entirety of the service experience across various touchpoints.

The principle of efficiency, while certainly important in many aspects of service management and delivery, is not one of the five core principles of service design thinking. Instead, efficiency can be seen as an outcome of applying the core principles rather than a guiding principle in itself. The focus in service design thinking is to create solutions that are not only practical but also meaningful and valuable to users, which may lead to efficiencies as a secondary benefit.

Therefore, identifying efficiency as not being one of the five principles highlights the importance of prioritizing user needs, evidence-based design approaches, and a holistic view over merely aiming for operational efficiencies. This distinction helps emphasize the essence of service design thinking in delivering services that resonate with and effectively meet the expectations of stakeholders.