To design a great product the designers need to focus on a specific area of the design process. The specified segments and devices in the book would serve the designers by focusing their attention to each area of the design process. Each device described in the book briefly describes it, specifies its importance & value, explain the way to use it and supported by an example to describe it.
The design devices list specified in this book is exhaustive and every device would not be suitable for your projects. Design team needs to identify and list the devices to be used for a specific project. These devices would motivate the design team in various ways by suggesting them relevant methods to solve the design problem.
It is suggested that this resource should be used as a guide and reference to create better product designs.