A new industrial revolution is upon us, characterized by "smart devices", which are part of an "Internet of Things" or IoT that can actually direct machines on the shop floor by communicating autonomously "device-to-device" to man-age manufacturing operations and distribution.
This is one of the great barriers to lean implementation: Concepts of lean are both counterintuitive and counter-cultural. Hence, if you wish to be a lean leader, you must go back to the basics and make sure you have a clear understanding before you are able to teach others.
When people are asked to define lean, as often as not the definition centers on waste. But lean isn't all about waste. It is more about building organizations than trimming them. A popular definition is "do more with less."
Downtime is the enemy of lean. Downtime is, in fact, waste. Idled lines do not add value. Restarting production after unplanned downtime requires more effort, usually expended with less efficiency and worker productivity. This reintroduces waste, which creates added costs that customers do not pay for, yet must be absorbed into cost of goods sold.