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The 8 forms of waste are also referred to as the 8 forms of muda. A Lean strategy attempts to remove any and all forms of waste from business processes.
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Work in progress or process refers to one form of inventory. WIP as it is often referred to as, is the work that is in process or production at a stage that falls between raw material and finished product.
Waiting is defined in one way as: "staying where one is or delaying until a particular time or something else happens". In the case of the waste of waiting we can say it is any situation where a delay, idleness or a stop occurs. There are generally three categories where waiting is related:
 The waste walk is one of the best ways to train employees, reveal waste and discover new improvement opportunities. Simply put, it is a time where teams or individual's head to the gemba and look for waste. The waste walk can be a standard activity, planned event or a now and then practice. The only skill people need to have during a waste walk is a basic understanding of the 8 forms of waste. The ©WASTES methodology is a problem solving methodology that is used by Lean Strategies International LLC. The methodology is a simple and easy to use 6 step method for conducting a waste walk or training/kata, . The six step process can be used with experienced employees who are seasoned in waste identification and it can be a great way to train new employees to develop a lean thinking mindset while learning to see opportunities to remove waste. The six steps involved in the ©WASTES Methodology are:
 The waste hierarchy is a common tool used in green and environmentally focused organizations. The tool helps to rank the different options that you could select when managing waste. As you can see the highest priority is shown at the top and descends as shown below:
Challenge: In the comments section below list one way you could prevent waste, one way you can reuse some items, one way you could begin recycling and one way you can recover some materials, energy or value from waste.
 Work sequence is the order in which work is performed. The work sequence is generally made up of the best possible method of performing a task or producing a product. Work sequences should be established with the absolute minimum amount of waste in the sequence.
 A water spider/runner/mizusmashi is someone who transports materials quickly and efficiently from work area to work area. Typically the water spider will collect, deliver and log the flow of materials as they move from area to area. This person will also attempt to move as much non-value added work away from the primary member.
 Weibull distribution is a flexible continuous probability distribution. The graph is used with reliability in various engineering applications. Parameters are often tailored or molded to fit product characteristics throughout a product life cycle. A very good read for more information on the Weibull analysis is Weibull Analysis by Bryan Dodson.
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