“Sketching and modeling are integral features of the design process, critical for both the generation of ideas, and the communication of concepts to others for discussion and evaluation, particularly in the context of human-centered design. While these methods are a natural component of the designer’s education and professional tool kit, there is immense value in exposing other professions involved in the development of products and interfaces to at least a limited set of these same basic tools.” (Bruce Hanington – uiGarden.net)