Examines metaphor's limitations as a visual-rhetorical framework for designing, evaluating, and critiquing user interfaces. Outlines an alternate framework for visual rhetoric, that of genre ecologies, and discusses how it avoids some of the limitations of metaphor. Uses an empirical study of computer users to illustrate the genre-ecology…

Examines argumentative and research papers written by students using Macintoshes in comparison to those written using IBM-compatibles. Finds that differences are not large enough to justify claims that the use of a graphical user interface affects writing skills. Suggests that rapid changes in technology makes the issue moot. (RS)