时间价值图的A Note About Waste in Project Management

　　One of the primary goals of the Lean Six Sigma project management methodology is the elimination and reduction of waste. There are different types of waste in the Six Sigma terminology. These seven types of waste are:

Overproduction - occurs when a product is made without a buyer Waiting - occurs when a product sits in waiting for processing Transport - occurs when a product is moved to many different places Inventory - occurs when a product is stored and it costs money Over-processing - occurs when a step in the process is unnecessary or redundant Motion - occurs when people move excessively Defects - occurs when an error in the process occurs

　　Companies that wish to save money and resources do well to reduce waste in their processes. The reason a time value map is so crucial to project management is that it allows identification of areas of waste.