The course emphasized the credo, "If the worker hasn't learned, the instructor hasn't taught".[2] At the request of enterprises outside of manufacturing, variations to the JI program were developed for hospitals, office and farms. Job Methods (JM) - a course that taught workers to objectively evaluate the efficiency of their jobs and to methodically evaluate and suggest improvements. The course also worked with a job breakdown, but students were taught to analyze each step and determine if there were sufficient reason to continue to do it in that way by asking a series of pointed questions.