Summary

The craft of interaction design is really the craft of creating the models, diagrams, and documents that communicate the designer's designs. These representations, and the testing of those with clients and users, are the designer's bread and butter. They are what designers use to do their most important work, moving their knowledge and vision from their minds and hearts to their hands and to the design itself. Designing, as Hillman Curtis has noted, is making the invisible visible, and this is what the best models, diagrams, and documents do. The quality of the models and diagrams and documents that designers make reflects the quality of the designer. Designers should strive to make each representation a designed artifact, filled with smart, deliberate choices.