Knowledge and ScienceScience, Math, Software, and IntuitionPractical TheoryThe Value Stream: Demand, Stocks, and ProductionBuffersTypes of BuffersConceptual Illustrations: Something or Someone Is Always WaitingA Manager’s World: Environment, Tactics, Controls, and MeasuresPutting Practical Science to PracticeDefinitionsFactory Physics Science: As Simple as Possible but No SimplerAdvancing the Practical Science of ManagementThe VUT EquationCycle Time versus Utilization GraphProduction and StocksLittle’s LawProduction-Flow GraphVariance of Replenishment-Time Demand EquationTradeoff Plot: Inventory versus Fill Rate GraphEfficient FrontiersInsights from the Tradeoff PlotVisual Management of Stock-Point PerformanceStocks and Flows, the Lot-Size Graph