A New Phenomenon: Industry Demands Industry Knowledge 
The need for excellent technical communication has pervaded almost every nook and cranny of business, industry and government. As computers have become as common as telephones and typewriters, the ability to use them is almost assumed. Now a new, more pervasive need is appearing - the need to know about the business and application. Technical communicators are being called upon to have knowledge of and familiarity with the terms and practices of specific industries.
Katzin, Emanuel. STC Proceedings (1994). Careers>TC