I was fortunate to propose parts of this discussion to Bill Dettmer and Philip Marris, in November 2014 in Paris, and to record as they discussed. Among the topics: how the name “Theory of Constraints” generates rejection in the business community. The term “constraints management” is preferred by Bill Dettmer and Philip Marris. Philip points out problem … Continue reading Bill Dettmer and Philip Marris discuss various aspects of the Theory of Constraints
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
During the Logical Thinking Process training course (June 2015), Bill Dettmer took us through the whole process and the associated tools at each step. The process starts with the famous Goal Tree, assess the current situation and focus on critical root causes with the Current Reality Tree (CRT). Conflict Resolution Diagram (AKA Evaporating Cloud) may … Continue reading Rotate a Tree to start your project
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)
In this video, Clarke Ching explains Philip Marris how to speed up learning by speeding up the audio book playback. While Philip has reservations about this technique, I do use it with several medias: Podcast playback on iPhone x1.5 (x2 is usually too fast for me) Youtube conferences clips, Youtube allows x1.25; x1.5 or x2 … Continue reading Learning Faster
Organizations with high level of Work In Progress also have long Lead Time, according to Little’s law. High level of WIP clutter the process and tie cash into the process, while long Lead Times do not help agility nor On Time Deliveries. In order to improve the situation it is necessary to drain the system of … Continue reading The 2 for 1 rule to reduce WIP and Lead Time
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?