[1][2][3] The book puts forward a large number of interface design suggestions, from fairly trivial ones to radical ones.

[citation needed] Raskin often refers to the computer he designed, the Canon Cat, as an example of a system that implemented the various measures he advocates.

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.

[citation needed] 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.

[6] Among them: Habituation is an important concept driving Raskin's guidelines, intended to free the user's mind from attention to low-level interaction details.