Eliyahu M. Goldratt was an educator, scientist, philosopher and business leader, but first and foremost he was a thinker who provoked others to think. He has been described by Fortune Magazine as a guru to industry and by Business Week as a genius. His gripping fast-paced business novels are transforming management thinking throughout the world. Goldratt’s Theory of Constraints is being used by thousands of corporations, and is taught in over 200 colleges, universities and business schools. His books have sold over 5 million copies and have been translated into 23 languages. For more information on Dr. Goldratt and his work, visit  The World With TOC.

Yishai Ashlag holds a PhD in economics from Bar-Illan University in Israel. Upon graduation he spent a year as a post doctorate visitor at the Wharton School at the University of Pennsylvania. For the last 20 years, he has worked as an adviser, consulting government agencies, policy makers, investors, and businesses in various sectors such as automotive, consumer goods, agribusiness, healthcare, finance and retail. Ashlag, worked closely with the late Dr. Eli Goldratt, the developer of the theory of constraints, and is also his son-in-law. Currently he is senior partner at Goldratt Consulting; where he acts as the head of knowledge development and implementations. Ashlag is the author of TOC Consulting: Removing Constraints for Business Growth.

Domenico Lepore and Oded Cohen: These two authors have devoted their professional lives to understanding and implementing the processes presented in their book, Deming and Goldratt: The Theory of Constraints and the System of Profound Knowledge—Lepore as a Deming Scholar and Cohen as Eli Goldratt’s collaborator and partner. For more information on the concepts represented in their book, visit:

Richard C. Putz is an educator, consultant and advisor to senior management. Co-author, with Richard L. Spellman, Jr. of The Uncorrupted Stock PickerHe has held senior executive positions at manufacturing, finance and high tech companies including Oracle, C-bridge and Coopers & Lybrand. He is on the faculty of the Purdue University entrepreneurial program and teaches Value Chain Management at Loyola University.

Richard L. Spellman, Jr. has been actively involved in the financial services industry for many years. Co-author, with Richard C. Putz, of The Uncorrupted Stock Picker, Spellman holds an undergraduate degree from the University of Notre Dame, University of Chicago and an MBA in Finance and Marketing from Boston College. He currently works for IBM.

Julie Wright “found” TOC during her undergraduate studies. Coming from an engineering background, she read Eli Goldratt’s book The Goal twice in one weekend and needed to know more. After attending the TOC Odyssey and receiving a university degree in Business and Science, she headed straight to the AGI Academy. After six months of intense TOC training, she came back to the UK with an overwhelming desire to apply TOC to the biggest organisation in Europe, the British National Health Service, and set about achieving this ambitious target. Whilst researching her book she secured a job in a not for profit healthcare organisation and has continued to use her new found skills to make the organisation more successful than she had hoped for. Since then she has also become involved with another not for profit organisation, TOC for Education, and is delighted to be associated with such a caring and generous organisation that is introducing children around the world to the Thinking Tools.

Russ Scaffede, co-author with Dwane Baumgardner of The Leadership Roadmap, is President of Lean Manufacturing LLC and General Manager of Toyote Boshoku America. Scaffede has worked with the Donnelly Corporation and Tiara Yachts, providing highly successful lean implementations. He is a consultant and a public speaker and an expert in Toyota’s production as a total systematic approach to the people development process.

Dwane Baumgardner, co-author with Russ Scaffede of The Leadership Roadmap, is President of the Scanlon Foundation. Baumgardner retired from his post as President and CEO of the Donnely Corporation after a 20-year tenure, during which he oversaw impressive sales growth from $30 million to $900+ million. He currently serves on the board of directors for four companies.

Boaz Ronen, author of Approximately Right Not Precisely Wrong, is a professor at Tel Aviv University’s Leon Recanati Graduate School of Business Administration. Prior to his academic career, he worked over a decade in the Israeli hi-tech industry. His work draws together strategic and tactical aspects of the Theory of Constraints, Management of Technology, new methods for Costing, Pricing, Managerial Decision Making, Transfer Prices, and advanced philosophies in Operations Management.

John Tripp is the author of TOC Executive Challenge. He is the president of Goldratt-TOC Ltd. Tripp has worked with Dr. Goldratt and his partners since 1985. He supports a number of worldwide management development programs and is a lauded public speaker and workshop presenter.

Richard Klapholtz is co-author, along with Alex Klarman, of The Cash Machine and Release the Hostages. He is manager of a distribution operation in Asia, stationed in Hong Kong. Klapholtz has spent a great deal of time examining and drawing parallels from Professor Goldratt’s books on operations and project management to with his personal experience in sales and marketing.

Alex Klarman is the President of Goldratt Institute (Israel), the first and the largest organization promoting TOC in Israel. Alex earned his Ph.D. in Physical Biochemistry from Tel-Aviv University in 1978. He specialized in the evolution of complex systems. A friend and colleague of Dr. Goldratt for more than three decades, he has led the effort of developing means and tools to impart the TOC knowledge to its students and practitioners. A founding partner of The Goldratt Institute, he is TOC-ICO certified in all fields of TOC theory and practice. In the last 13 years Alex has led large-scale TOC implementation projects in Israel, Europe and Asia.