Immediately, the Preface and introduction of Rex Hartson and Pardha A. Pyla's (2012) co-authored The UX Book: Process and Guidelines for Ensuring a Quality User Experience , grounds the reader in a specific overview of the practical and pedagogical components of the UX design process. The practical aspect of the text centers on what the authors call the UX lifecycle, a highly structured framework that orchestrates the many different design and evaluative stages of system or product completion. The pedagogical approach of the text is an awareness of audience that translates into a customizable book. Both authors encourage their readers to decide what parts of the text are of interest and to focus on those sections only. Central to the text's overall approach is the refrain "user experience is more than usability" (pg. xi). Within this approach, for instance, Hartson and Pyla address some of the ineffective metaphors that cloud or muddle the UX lifecycle process. Previous models often rely on testing, or lab-based metaphors that fail to generate a quality user experience. With the rise of design-oriented techniques today, the development process has been wrested from previously-held beliefs that a system or product can be generated independent of the user's environment.