Only a few authors have assembled collections of design tools. In this article, Joanne Mendel proposes a taxonomy of models, grouped according to their use in a four-phase design process. Readers may be interested in similar projects, listed in the sidebar accompanying this article.Hugh Dubberly Models are increasingly important in designas design, in collaboration with other disciplines, increasingly deals with systems and services. Many aspects of customer experience unfold over time and location, and thus are intangible. With their ability to visualize and abstract various aspects of a given situation, models become tools for exploring relationships in ways that…
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