Webinar : Logical Thinking Process case studies 

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How is the Logical Thinking Process applied? 


The Logical Thinking Process (LTP) is a systematic methodology used to clarify objectives, identify the root causes of complex problems, and resolve persistent conflicts. A structured approach enables in-depth analysis and informed decision-making to enhance performance and achieve sustainable results in various professional and personal contexts.

Logical Thinking Process Case Studies Poster

Dates & Information


Thursday 22nd of February 2024, 5:00PM to 5:45PM Paris time (CET or UTC+1).

Presented by Thorsteinn Siglaugsson and Bill Dettmer.

Free online webinar, in English.

25 minutes of presentation, 20 minutes of questions/answers.

Event closed. 

Slides of the presentation 


Conference Replay



Webinar summary


Thorsteinn Siglaugsson and Bill Dettmer presented a few real-life examples of how the Logical Thinking Process can be applied to define the goals and the critical success factors, to identify the root causes behind complex problems, and solve persistent conflicts.

They went through the followng examples:

  •  An underperforming medium-sized family business, where the identification of a tacit misconception broke the status quo,
  • How the LTP was used to help a department sell into a fast-growing market, but unable to keep its market share,
  • Why an important software implementation project failed
  • How unearthing a critical root cause removed a barrier to a person's career progression


About Thorsteinn Siglaugsson and Bill Dettmer


Petit portrait de Bill Dettmer

Thorsteinn Siglaugsson is an Icelandic entrepreneur, writer, and educator with a strong track record in software, strategy consulting, and performance management. He is an INSEAD MBA and a philosophy major as well as a certified expert in the Logical Thinking Process.

He lives in Reykjavik, Iceland, and divides his time between managing a software business, providing consulting and training, writing and research.

He is the author of the book "From Symptoms to Causes: Applying the Logical Thinking Process to an everyday problem."

He is currently coaching online LTP-students alongside Bill Dettmer.

H. William “Bill” Dettmer is the author of seven books on constraint and complex system management, including The Logical Thinking Process and Brainpower Networking Using the Crawford Slip Method

Over his 25-year consulting career, his clients include United Health Group, Raytheon Missile Systems, U.S. Air Force Software Technology Center, Seagate Technology, U.S. Navy Sea Systems Command, Lucent Technologies (both in Europe and the US), Western Digital Corporation, NEC America, INESA and ICI/Inca Corporations (South America), Orrcon Ltd. (Australia), Qualiplus, S.A. (Brazil), Bayer GmbH (Germany), and Osram GmbH (Germany). 

A retired US Air Force command pilot, Bill has 4,000 hours of multi-engine jet flying time and 75 combat missions to his credit.

He holds a BA degree from Rutgers University and a Master of Science degree in Systems Management from the University of Southern California, where he also taught graduate courses in the same program for seven years.

Bill is the foremost expert in the world on the Logical Thinking Process originally conceived by E.M. Goldratt.

In partnership with Marris Consulting and Thorsteinn, he is currently teaching the LTP in an online course.


To learn more about the Logical Thinking Process

Logical Thinking Process

 Logical Thinking Process training

About Marris Consulting

Marris Consulting is an industry consulting and training company specialized in the Theory of Constraints (ToC) and Critical Chain Project Management. We focus on improving the performance of manufacturing and process industries by using Constraints Management combined with Lean and Six Sigma. To boost project performance, we also use Critical Chain Project Management (CCPM), which we sometimes combine with Lean Engineering. Our 2-day performance audits, our performance consulting services and our project management, Lean, ToC & CCPM training by our industry consultants offer a wide range of solutions to help our clients around the world reach the highest possible levels of performance.

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