The Humane Interface

The Humane Interface: New Directions for Designing Interactive Systems is a book about user interface design written by Jef Raskin and published in 2000. It covers ergonomics, quantification, evaluation, and navigation. The book puts forward a large number of interface design suggestions, from fairly trivial ones to radical ones. The overriding theme is that current computer interfaces are often poor and set up users to fail, as a result of poor planning by programmers and a lack of understanding of how people actually use software. Raskin often refers to the computer he designed, the Canon... Cat, as an example of a system that implemented the various measures he advocates; the Canon Cat is often considered the first information appliance. Many of the ideas presented in the Canon Cat and The Humane Interface were later adopted by Raskin in his Archy project, and later by his son Aza. Raskin includes a chapter demonstrating four models of quantifying the efficiency of a software interface: the GOMS keystroke model, Raskin's own efficiency measure, Fitts' law and Hick's law.
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