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Summary

Similar to the core design values and the product vision process described in the previous chapter, this model of the user interface provides a consistent and predictable method for approaching the complex, multi-dimensional problem of interface design. In particular, the model provides the following benefits:

  • A common vocabulary for identifying elements of an interface

  • An understanding of how individual aspects of an interface relate to one another and to the experience as a whole

  • A constructive means of prioritizing design tasks so that a solid foundation is firmly established before the supporting elements are added

  • An objective method for categorizing user feedback based on the impact on usability and engineering effort required to correct problems

  • A rational system for allocating design resources and effort

With the end of this chapter, the book is also closed on Part I: “Foundations.” Moving on to Part II, “Tier 1: Structure,” the focus turns to a layer-by-layer discussion of Web applications, starting with the Conceptual Model layer.

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