How to use Metaphors in Design
Dan Saffer writes a to-the-point Masters thesis (Carnegie Mellon School of Design) on the role of metaphor in interaction design. Clearly illustrates how metaphors lower the cognitive load of an artifact by translating abstract concepts into something more familiar and visceral for users. He warns:
“Unquestionably, companies have fostered onto users all sorts of misbegotten metaphors, stuffing existing functionality into uncomfortable and awkward metaphors. Yet, when used properly, they can be a powerful tool for conceptualizing, orienting, and personifying products.”
If you don’t want to read the entire thesis check out Dan’s work on slide share.