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This article describes one person's experience in coming from an academic environment to work at Digital Equipment Corpo I've divided this history into two distinct parts. AI and DEC's entry into the AI market, DEC engineers were This article is an edited version of Dr Polit's presentation at the Technology Transfer Symposium held at the AAAI-83 conference Building Expert Systems I'll now give a brief review of the steps involved in building expert systems as they are described by many researchers. The five steps involved in building an expert system are: Step 1: problem recognition, Step 2: task definition, Step 3: initial design, Step 4: knowledge acquisition, and Step 5: system maintenance. Frequently, the problem is perceived as a bottleneck in a larger process; sometimes it is a scarcity of traiued personnel. Second, during step 2, researchers must define the functions the AI system will perform.