Professor Robert Horn specializes in Visual Language (1998 book), Public Policy/Society Design, Knowledge Management, Argumentation Visualization/Argumentation Mapping, Structured Writing, etc.
earlier book Mapping Hypertext ISBN:0962556505
The Little Book of Wicked Problems and Social Messes
2005 argument-map on Avian flu pandemic: http://www.bobhorn.us/assets/uc-avian-pandemic-notqtwrstv10-what-is-2005_reduced.pdf
His "can computers think?" map was reproduced in DebateGraph
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