The LTP Roadmap Wheel

A 4-minute explanation by Bill Dettmer


Eliyahu Goldratt initially imagined the Logical Thinking Process (LTP) to be an iterative process, to be repeated as long as the system has not reached a satisfactory level of performance. It is a cycle based on the building of five logic trees that are interconnected, which means that the outputs from a given tree constitute the inputs for the next tree. The Goal Tree, in the middle of the wheel, must be the reference point for the construction of the four other logic trees which are the Current Reality Tree, the Evaporating Cloud, the Future Reality Tree and the Prerequisite Tree. This methodology enables you to answer the four fundamental questions of your systemic problem:


  • What is expected?

  • What to change?

  • What to change to?

  • How to cause the change?



Marris Consulting regularly organizes training sessions about Logical Thinking Process



Marris Consulting, expert in Theory of Constraints & Critical Chain Project Management


Marris Consulting is an expert in the Theory of Constraints (ToC) and Critical Chain Project Management (CCPM). As industry consultants, we are focused on helping process and manufacturing industries reach their highest levels of performance by using Constraints Management  combined with Lean and Six Sigma. We also use Critical Chain Project Management which we sometimes combine with Lean engineering to improve project performance. If you are unsure about the actions which need to be implemented to improve operational efficiency, our industrial management consultants can also conduct a performance audit. Furthermore, our experts host numerous Theory of Constraints (ToC), lean and project management training sessions throughout the year.

Home>Videos>Logical Thinking Process >The LTP roadmap wheel

Share this page 

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.

Social networks



Tour Maine Montparnasse, 27éme étage
33, avenue du Maine - 75755 PARIS cedex 15

Tel. : +33 (0)1 71 19 90 40

Contact us via our form


Who are we ?


Legal Notice

Site map