Improvement Kata – Scientific Thinking Patterns
Improvement Kata, as presented by Mike Rother, is described using the term Scientific Thinking Patterns. This concept is formally researched and published in the book Toyota Kata (2009).
An interesting point Mike shared is that the original manuscript submitted to the publisher was titled “Beyond What You Can See.” From a personal perspective, this title most closely reflects the true nature of the book – what lies beneath what is visible.
Scientific Thinking is essentially a goal-oriented pursuit of knowledge. It involves forming hypotheses, asking questions, testing through experiments, relying on evidence and observation, identifying patterns of operation, and serving as a foundation for decision-making.
Organizations, teams, and individuals who apply Scientific Thinking typically demonstrate the following characteristics:
- Continuously learning and developing understanding to achieve challenges
- Questioning the gap between current conditions and desired outcomes
- Testing hypotheses and drawing conclusions based on experimental evidence (not merely experience)
This research aims to answer two important questions:
- What are the underlying thinking patterns and daily management practices—often invisible—that drive the remarkable achievements of Lean Toyota?
(What we usually see are tools, visual boards, methods, solutions, and improvement ideas applied to help organizations adapt and compete in a constantly changing environment.) - How can non-Toyota organizations learn and develop these thinking patterns within their own systems?
Why is this important?
We can agree that Lean at Toyota is not simply a collection of tools such as 5S, visual management, processes, or value streams. Toyota’s system was developed over many years – they did not start with predefined tools. These tools were later named and formalized after the system had matured and proven its superiority.
This explains why simply copying Lean tools is not effective.
Why?
Because tools are designed to solve specific problems. They may not fit every context, and it is impossible to copy everything everywhere.
What is much harder to see is that, over time, Toyota has built a management philosophy and a way of working together that develops people who think, generate knowledge, and continuously improve.
For those interested in Lean, a common question is: What is Lean?
There are many definitions, such as:
- Lean is waste reduction
- Lean is achieving more with fewer resources
Another perspective:
Lean is a system for continuously developing people who carry out continuous improvement.
At its core, Lean is about learning.
This may not be the only definition, but it is one of the most meaningful.
In reality, applying Lean tools alone is not sufficient and can even create skepticism. There is no universal solution for all contexts. For example, it would be unreasonable to apply Kanban everywhere.
Improvement Kata provides a clearer picture of:
- Management thinking patterns
- How teams work together
These elements are often “invisible” but critically important.
Perhaps one of the most valuable contributions is that the author has made these thinking patterns visible – so they can be learned, practiced, and developed (through what is known as Starter Kata).
Questions for further exploration:
- What is Improvement Kata? (What is “Kata”?)
- What Improvement Kata is not
- How does it benefit organizations?
- How is it different from conventional improvement approaches?
- How can organizations learn and adopt it effectively?
- What does a successful Kata-driven organization look like?
Further Reading: Improvement Kata materials (attached)
Contact us to learn more about Improvement Kata programs
