About this Presentation
What is a Constraint? What purpose should it cater to? How to define it? How to use Constraints? These questions are central to TOC and as a living science the concepts evolve and are challenged in the process of making them more general, robust and practical.
What Will You Learn
To help you get the most value from this session, we’ve highlighted a few key points. These takeaways capture the main ideas and practical insights from the presentation, making it easier for you to review, reflect, and apply what you’ve learned.
The session demonstrates that even mature Constraint Theory practice evolves when multiple experts compare perspectives, revealing nuances in how constraints manifest and can be addressed.
It highlights how combining clinical TOC thinking with real-world experience exposes deeper patterns — such as the interplay between buffer behavior, resource contention, and execution culture — that are often overlooked.
The presentation shows that looking beyond textbook constraint definitions helps practitioners identify non-typical or shifting constraints that can limit performance in complex systems.
It emphasizes that integrating insights from different TOC experts broadens practical understanding of constraint management and improves decision-making in planning, execution, and ongoing improvement.
Instructor(s)
Dr Alan Barnard
Dr. Alan Barnard is a leading decision scientist and Theory of Constraints (TOC) expert with almost 20 years of experience working directly with Dr. Eli Goldratt, the creator of TOC. As the CEO of Goldratt Research Labs (USA), Alan focuses on using advanced technologies and decision sciences to develop Apps and Decision Support methods, enabling organizations to achieve more with less time. Under his leadership, Goldratt Research Labs has collaborated on innovation and research projects with renowned Fortune 500 companies like Microsoft, Cargill, BHP, Tata Steel, Amazon, and others, along with public sector organizations like Utah Governor's Office and UN WFP. Alan has held prominent roles in various organizations, including past-President of the South African Supply Chain Society SAPICS and past-President of TOCICO. His significant contributions have been recognized through prestigious awards, including inclusion in the 2020 Marquis Who's Who Global Listing, membership in the Forbes Technology Council, and the TOCICO Lifetime Achievement Award. He is an accomplished author and frequent presenter on Decision Making in a Complex World and Theory of Constraints at international conferences. Alan's latest book, "The Bottleneck - How to resolve our attention crisis," is currently in progress. As the chief architect of the award-winning HARMONY Decision Maker, Change Simulator, and Change Maker series of Decision Support Apps, Alan continues to shape the landscape of decision science and TOC. Please let me know if you need any further information or details.
Eli Schragenheim
Eli Schragenheim is a well-known international management educator, author and consultant active in various fields of management. He worked with a huge variety of organizations all over the world, including public-sector organizations, industrial, high-tech and start-ups.
Since he had joined Dr. Eliyahu M. Goldratt, the famous creator of the Theory of Constraints (TOC) in 1985, Eli Schragenheim had taught, spoke at conferences, and consulted all over the globe.
Eli Schragenheim is the author of several books on various aspects of management. His last book, Throughput Economics – Making Good Management Decisions, together with Henry Camp and Rocco Surace, was published in July 2019.
Eli Schragenheim first book Management Dilemmas (1998) showed a variety of problematic situations in management and the rigorous analysis leading to the right solution. Next he collaborated with William H. Dettmer in writing Manufacturing at Warp Speed. In this book the new concept of Simplified-DBR, now a key concept in production planning according to TOC, was introduced. He collaborated with Carol A. Ptak on ERP, Tools, Techniques, and Applications for Integrating the Supply Chain, and with Dr. Goldratt and Carol Ptak on Necessary but Not Sufficient. In 2009 his book Supply Chain Management at Warp Speed, with William H. Dettmer and Wayne Patterson was published. In March 2015, Eli has opened a blog, now containing more than 140 articles on various topics in TOC that everybody can access.
James R. Holt, Ph.D
Dr Holt is a TOCICO Founder and prior President of TOCICO. He taught the first Critical Chain Course for Goldratt Schools. And, he is a frequent presenter at TOCICO Conferences.