Sep 2 2016
Why I don’t like Lean houses, except one | Christian Hohmann | LinkedIn Pulse
“I never liked the (Toyota inspired) Lean houses and their many variants. First all these models are generally understood as prescriptive rather than descriptive, thus those new to Lean tend to adopt and copy one model without necessarily understanding its real meaning. The building blocks of Lean houses are principles, methods and tools, reinforcing the feeling that it’s all about “techniques”.
The house building metaphor also suggests a beginning with sound foundations, robust pillars and when the roof is atop, the organization is done. We’ll see later it is not in this way. To add to the confusion, with the broad choice of variants, which is the right one to look at?”
Sourced through LinkedIn Pulse
Michel Baudin‘s comments:
I share your reservations about the many “Houses of Lean” floating around, but my main concern with them is vagueness. The descriptive versus prescriptive confusion that you bring up is one concern. In one diagram I am looking at right now, “Heijunka” sits on top of “Stability” and underneath “Pull System,” “Takt Time” and “Continuous Flow.” Whatever it is intended to mean, it can’t be that you should implement Heijunka as soon as your processes are stable. Given that there are very few companies outside of the Toyota supply chain that have even implemented Heijunka, it is clearly an advanced topic, not to be tackled until you have done many other things, including items listed above it.
The basic operation when drawing a house of Lean is stacking. It has a well-defined meaning in computer networks, where you talk about “protocol stacks.” For example, the worldwide web sits on top of the internet, and it means that, behind the web face it shows you, your browser uses the internet protocol to communicate with the world, in ways that would be unintelligible to you. The meaning is obviously different in a “House of Lean,” but what is it? And what does it mean to draw a manager inside?
Oct 2 2016
Lean’s Crazy Relatives | Jim Womack | Planet Lean [Review]
“Every family has a few members who are eccentric and problematic – like the proverbial crazy uncle locked in the attic. While this makes for fun conversations at family events – provided these folks don’t attend! – crazy relatives can become a real problem if their antics reflect on the whole family. In the lean movement my two candidates for crazy relatives are Frederick Taylor and Henry Ford, who continue to cause us trouble 101 and 69 years after passing from this life.[…]”
Sourced from: Planet Lean
Michel Baudin‘s comments: First, thanks to Bob Emiliani, for bringing this article to my attention through his own critique of it. I disagree with the article too, but for different reasons. Womack wants to put a distance between his Lean and the legacy of Taylor and Ford, by branding them “crazy relatives.”
I see them as precursors, alongside many others, not crazy relatives. When implementing concepts from Toyota outside Japan, it is better salesmanship to embrace local precursors and stand on their shoulders than to dismiss them. Lean/TPS goes down easier when presented as a new chapter in an existing, familiar story than as an alien approach, and I believe this is why Toyota’s PR literature emphasizes the link to Ford.
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By Michel Baudin • Blog reviews • 1 • Tags: Frederick Taylor, Henry Ford, Jim Womack, Lean