The guest editors offer a brief history of visualization, discuss the present state of the art, and explore the possibilities and challenges that lie ahead. They then discuss the contents of this special issue in terms of the trends in visualization theory and research. They conclude by observing that technical communicators must respond to the challenges presented in the content of this issue, both by using the methods presented and by performing the further research the authors call for. Additionally, researchers must incorporate the results of inquiry in the related fields.
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