Chris Hohmann

Chris Hohmann
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Chris Hohmann

 •  January 14

Many months ago I was approached by the European Katacon organizers to help setting up the 2018 conference. Katacon is about kata, the Toyota Kata revealed to the mass by Mike Rother in the book… Toyota Kata. It’s about patterns of thinking and behaviour to improve and solve problems. I modestly offered my website, blogs and networks as sounding...

Chris Hohmann

 •  January 1

This is a classical debate among Lean newbees and even among specialists: are the 5S the first steps to SMED or not? As so often there is more than just a binary choice. If you are not now familiar with 5S, you may get a primer reading my posts series: The Quick Beginner’s Guide to 5S If you are not now familiar with SMED, you may have your...

Chris Hohmann

 •  December 10, 2017

When facing a challenge, many subordinates quickly complain about the lack of means and scarce resources. But what it takes to achieve an objective is more than just means. Complaining about scarcity of means or resources is a convenient way to push the responsibility of the difficulty of the challenge and the possible failure to the boss, and...

Chris Hohmann

 •  December 3, 2017

This is part 5 of a series of posts about identifying the constraint of a system and time for wrapping up and a conclusion (of the series, not the topic!). Newcomers to Theory of Constraints understand quite easily the concept of bottleneck but are frequently puzzled when looking for them in a real-life process. Furthermore, people have usually...

Chris Hohmann

 •  November 26, 2017

Since the publishing of early books on Theory of Constraints, the world grew more complex and the system’s constraint got more and more elusive. Globalization and extended supply chains give a constraint opportunity to settle literally anywhere in the world and extend its nature. It can be a physical transformation process in a supplier’s facility,...

Chris Hohmann

 •  November 18, 2017

Inventories and Work In Progress (WIP) can be helpful clues to visually identify the bottleneck or constraint in a process, but they can also be insufficient or even misleading as I explained in part 2 of this series. It is often also necessary to study material and parts routes to really understand where they get stuck and delayed. Chances are...

Chris Hohmann

 •  November 11, 2017

In this post I explain the difference between enablers and triggers in logic trees, which basically is explaining how Necessity logic differs from Sufficiency logic. I then explain the basic assumption when building a Goal Tree and why the Goal will not automatically be achieved even if a most of Necessary Conditions are fulfilled. Necessity-based...

Chris Hohmann

 •  October 25, 2017

When trying to find the system’s constraint, why not simply asking the middle management? At least when Theory of Constraint was young, our world spinning slower and processes simpler, the foremen usually had a common sense understanding of their bottleneck. They knew what machine to look after, and what part of their process to give more...

Chris Hohmann

 •  October 22, 2017

A very common question once people get familiar with Theory of Constraints and the notion of bottlenecks and constraints is how to find them in a process. Identifying the constraint is key as the constraint, by its nature, controls the performance of the whole system. The trouble with examples given in textbooks or case studies is that they are...

Chris Hohmann

 •  October 19, 2017

This post is inspired by some pictures* in Mike Rother’s book “Toyota Kata”, very relevant in our actual changing times and complex situations. I really like the figures that remind that the journey towards a goal requires entering unclear territory at some point. Experience from the military tells that no plan, regardless how carefully it was...