Lean transformation model as TP trees

The only “lean house” I like is LEI’s Lean transformation model presented by John Shook. Unlike other houses or “temples”, this one does not suggest a generic template to be copied but a framework to define one’s own Lean transformation.

When I first listened to John Shook’s explanations, I “saw” Theory of ConstraintsLogical Thinking Processes (TP) Trees behind them. Especially a Goal Tree which describes all Necessary Conditions to fulfill in order to achieve the Goal.

Transforming an organization the Lean Way is the Goal. In order to achieve this Goal, John Shook lists 5 Critical Success Factors, five high-end outcome without which there is no way to achieve the Goal:

Each Critical Success Factor is dependent on underlying Necessary Conditions. The logical relationship between entities is base on necessity and it reads “in order to… we must…”.

John Shook gives the first layers of rather generic ones. From then on, in order to customize the Lean transformation (and the Goal Tree), the Necessary Conditions must be farther broken down.


The Logical Thinking Process provides one other tool which I “saw” in John Shook’s presentation: a Future Reality Tree. In this tree, the logical relationship between entities is not based on necessity (in order… we must…) but on sufficiency or cause-effect (if A exists then B exists).

Unlike a Goal Tree starting from the top, the Future Reality Tree reading starts from its bottom.

It reads like this:

  • IF Lean culture is our foundation AND IF we have supporting leadership behavior as well as management system THEN we develop people capabilities.
  • IF we develop people capabilities AND IF we have supporting leadership behavior as well as management system THEN we have continuous improvement.
  • IF we have continuous improvement AND IF we have a True North THEN we have a Lean transformation.

The Lean transformation Goal Tree is a way to explore all Necessary Conditions to achieve it, while a Lean Transformation Future Reality Tree is more a logical demonstration of how if will happen.


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One thought on “Lean transformation model as TP trees

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