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The bloopers include mistakes in window design, labeling consistency, visual/grammatical parallel construction, coherence of look and feel, and clarity. Most perceptively, Johnson observes that CPU speed in the development group hides many design mistakes. Moreover, context-scoping, already a subtle problem in software design, must be implemented in GUI design. Input error handling is the most psychologically sensitive of all GUI design characteristics. User error messages can easily be too vague or too specific, and diagnostic error messages should be user-manageable, if not actually user-interpretable.
Like the Hollywood outtakes that gave us the "blooper," the entertainment quotient here is measured in mistakes, not successes. Teaching by counter example rather than by example at an estimated ratio of three to one, Johnson panders to our invertebrate instinct to measure our own successes by someone else's failure. To his credit, he recognizes that user interfaces include pedestrian texts (like his) as well as graphical interfaces for computer applications. His self-referential style gives the book an egocentric slant, but he is both priest and practitioner: he submitted a draft to usability testers and reports the results in an appendix. One criticism was that there were too many negative examples. Hmmm.
Thanks to other tester comments, GUI Bloopers is a browsable book, allowing the few nuggets of wisdom to be located. For the most part, the book's value can be captured by reading the seven-page table of contents carefully. --Peter Leopold
I was at the session at the Computer Human Interaction conference in Holland where Jeff Johnson spoke. But another Jeff, Jeff Raskin also spoke and showed how some of Johnson's examples could be improved.
Raskin also introduced a book, The Humane Interface, somewhat deeper than this one, that helps you to really understand Web design. I'd reccomend reading and understanding Raskin's book so that you can see the few places where Johnson's ideas don't quite work. Then you can use this book, which is 95% right.
This book is by a pro whose career has been spent in designing interfaces and correcting the errors others make. He knows what he's doing, and we'd all be a lot better off taking his advice.
If you are designing information-based products that interact with people, you should first understand every point GUI Bloopers makes. This is a how-to, with lots of good examples, clearly explained. It is neither a work of psychology nor does it delve deeply into reasons why things work or don't. Read GUI Bloopers along with Norman's delightful book, The Design of Everyday Things (for motivation) and Raskin's thoughtful and thought-provoking The Humane Interface (for future directions).
This book made it instantly into the short list of my top recommended books for people who design interfaces. Get it, read it, follow it. Your customers will thank you.
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