These works among others cumulated in the scientific management movement on which Taylor in 1911 wrote his famous "The Principles of Scientific Management," a seminal text of modern organization and decision theory, with a significant part dedicated to the organization of machine shops. The introduction of new cutting materials as high-speed steel, and better organization of the production by implementing new scientific management methods such as planning boards (see image), significantly improved machine shop productivity and efficiency of machine shops. In the course of the 20th century, these further increased with the further development of technology.