Defining a TC Body of Knowledge
First of all, a profession cannot be recognized as a profession until it is defined as such. Engineers, for instance, have a body of knowledge they must master before they can practice as engineers, whether structural, electrical, or mechanical. Although technical communicators may not yet want such a highly codified and subdivided set of skills and practices, we do need an authoritative place to find answers to that eternal question: "What do technical communicators do, anyway?"
Hart, Hillary. Between the Lines (2008). Articles>TC>Knowledge Management>Body of Knowledge