 Deming worked from the Shewhart cycle and over time eventually developed the Plan-Do-Study-Act (PDSA) cycle, which has the idea of deductive and inductive learning built into the learning and improvement cycle.Deming finally published the PDSA cycle in 1993, in "The New Economics" on p. 132.Deming has added to the myth that he taught the Japanese the PDSA cycle with this quote on p. 247, "The PDSA Cycle originated in my teaching in Japan in 1950.