In this short excerpt from Bill Dettmer's Logical Thinking Process training course, Paris June 2015 session, Bill explains how to switch from a Prerequisite Tree (PRT) to system-level change implementation with Critical Chain Project Management. All it takes is to rotate the PRT 90 degrees.
Paris, June 2016, day 1 of the Logical Thinking Process training course hosted by Marris Consulting, Philip Marris welcomes the participants with a speech. Philip's speech is a mix of teasing and testimony as well as an analysis of the growing relevance of Theory of Constraints (ToC). Philip also explains how the Logical Thinking Process … Continue reading Logical Thinking Process training June 2016 opening speech
Silly things can cost a lot in terms of productivity and output. In this video interview, Philip Marris asks me about lessons learnt while helping a pharmaceutical plant to improve productivity and deliver drugs to patients faster. It is about how simple actions solve those silly small problems and bring big results at literally no cost.
In a previous post, “CCPM helps shorten aircrafts MRO”, I explained the benefits of Critical Chain Project Management (CCPM) for reducing the aircraft downtime during their mandatory and scheduled MRO. If CCPM is great and helps a lot meeting the challenge, it will not squeeze out every potential improvement, thus time reduction, on its own. … Continue reading TOC, Lean and aviation MRO
It is one of the frustrations for Theory of Constraints (TOC) enthusiasts: why is their beloved business philosophy so barely known? No other, neither Lean nor Six Sigma had such a visible high-flying banner like “The Goal”, the (probably) first business novel*, sold over 6 million copies so far. If readers have been so many … Continue reading What keeps TOC confidential? (and me angry)
Things moved on since Eli Goldratt’s revealed Theory of Constraints through his business novel and bestseller “the Goal”. Most of today’s processes are more complex than 30 years ago: supply chains are stretched over the globe, new products are launched more frequently and batches are changed more often, among others. Thus identifying the bottleneck or … Continue reading You are probably wrong when identifying your bottleneck
Little's law is a simple equation explaining how Waiting Time, Throughput and Inventory are related. Wait Time = Inventory (or WIP) / Throughput Here is a video about Little's law: Fine, what is Little's law good for? Well, if a process lead time is too long, chances are that work-in-progress (WIP) is too high. For … Continue reading What is Little’s law? What is it good for?
The Logical Thinking Process is the name of a book from Bill Dettmer as well as the name of a complex problem solving process inspired by Goldratt's Thinking Processes. Over time, while teaching the original Thinking Processes, Bill realized it can also be used for strategy deployment, not only complex problem solving. In this video … Continue reading The origins of Logical Thinking Process
In the following video interview, Philip Marris (answering Clarke Ching's questions) states that the five focusing steps of Theory of Constraints are wrong! Well it needs some more listening to understand the wisdom behind the provocative statement. First, the five focusing steps (5FS) are basically ok. What bothers Philip is the fifth step after the … Continue reading Beware of bottleneck hunting!
In spring 2015, Clarke Ching – Author of “Rolling rocks downhill” was guest of Marris Consulting in Paris. Clarke is an IT guy and he wanted to know how to identify bottlenecks in factories and in product development processes.