John Seddon writes about lean in his two books Freedom from Command & Control and The Whitehall Effect. He writes that the term lean was coined by Womack, Roos and Jones1 when they wrote The Machine That Changed the World. The term thus came to represent the Toyota Production System as a whole.
What’s interesting is that Taiichi Ohno, the man behind the Toyta Production System, unequivocally warned against using any kind of label on grounds that people then would view it as a ready-made package.2 Ohno counselled, never codify method, because it is the thinking that is the key.3 Ohno’s favorite word was understanding. He never explained.4 To Ohno, the approach was a way of behaving when faced with problems that needed solving.5 The point is that you can only absorb counterintuitive truths by studying and seeing them yourself.6
To sum up, the reason lean has become so popular is that it reduced the Toyota Production System to a set of tools.7 Tools can be taught and reporting can be institutionalized.8 Learning, on the other hand, requires active involvement.9
References added to Freedom from Command & Control and The Machine That Change the World.
1 John Seddon, Freedom from Command & Control, (2nd ed., 2005), p. 182.
2 John Seddon, The Whitehall Effect, (1st ed., 2014), p. 149.
5 John Seddon, Freedom from Command & Control, (2nd ed., 2005), p. 182.
6 John Seddon, The Whitehall Effect, (1st ed., 2014), p. 150.
8 John Seddon, Freedom from Command & Control, (2nd ed., 2005), p. 182.