With the growth of Lean into all sectors of manufacturing and service industries around the globe, a survey into the origins of Lean becomes vital. As English economist Maynard Keynes once said, "ideas shape the course of history," and Frederick Taylor's ideas still shape the course of history well after a century of use. Shop Management is a living lesson that shows how an innovative idea will adapt in order to survive. The purpose of Enna's Lean Origin Series is to facilitate that adaptation by publishing classic texts that are relevant to today's business needs.