Book Commentary 35 Three questions about Tufte~ analysis of design. Perspectives on Visual Explanations Nancy Allen Eastern Michigan University Ypsilanti, MI 48197 nallen@online.emich.edu Edward R. Tufte's 1997 book, Visual Explanarewarding, as well as intellectually and practically useful for anyone interested in design and illustration. In VisualExplanations Tufte's intriguing idea of portraying verbs is only partially realized. As he explains, the first part of the book is devoted to principles that guide our designs for quantitative evidence, also the topic of the first volume of this series. In fact, eleven pages of this 151-page third volume are devoted to a detailed discussion of Dr. John Snow's 1854 map of the water wells in a section of London. This map, which was briefly discussed and illustrated in volume one, helped to create a connection between water supply and cholera, thus contributing to the end of London's 1854 colera epidemic. Much of the book portrays examples of nouns rather than verbs; however, many of these nouns involve motion, time, or three dimensions, and several examples include foldouts and before-and-after sequences to portray verbs of change along with the nouns. I found Chapter 7, "Visual Confections: Juxtapositions from the Ocean of the
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