five lean principles:23 Value: specify value from the point of view of the customer. Value Stream: identify the value stream and all the steps in it, from concept to cash. Flow: limit work in progress; stabilize flow; focus on lead time, throughput, and flow efficiency; alleviate impediments to flow. Pull: move from a push-based system of work to a pull-based system of work; go at the capacity of the system of work and don’t over-produce. Perfection: the relentless pursuit of perfection.
