This article is based on a Jan 2006 post to Blue Oxen Collaboratories mailing list. For some excellent follow-up discussion, visit that link. As I wrote then, “The ontology guys are going to love this one.” (Because this article presents an ontology for design discussions carried on using a structuring language based on Horst Rittel’s IBIS methodology, or “Information-Based Information System” (via Jeff Conklin).
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