Cris Farnum's story of a redesign of Egreetings proves the importance of testing early prototypes, by showing how even experienced interaction designers can be wrong and how we have to accept that usability tests can fail concepts, which we believe to be superior.
The article is also an interesting case on testing paper prototypes - or "tabletops", as Farnum calls it. I especially like their use of laminated printouts of screens, which the users can write on with a thin whiteboard marker.
- The article Adventures in Low Fidelity: Designing Search for Egreetings
- August 01, 2002
See also: Usability testing (26) Wireframing and prototyping (29)