Amazon.com Customer Reviews
Excellent book for basic understanding of Lean Thinking - Review written on December 10, 2006
Rating: 5 out of 5
6 customers found this review helpful.
Lean Thinking is the second of the lean books from Womack and Jones. First was "the machine that changed the world", which changed my way of thinking. Lean Thinking picks up where "the machine" left and tries to abstract the learning from "the machine" into 5 values of lean. The 5 values are "Value, Value Stream, Pull, Flow and Perfection". By abstracting these values, Womack and Jones enable the lean manufactuing ideas to be used in different industries, which is exactly what happened. That makes this book a landmark book that maybe changed the world even more than their first book.
The book itself is a nice and very very easy read. The authors get to the point, their explanation is clear and their stories made me enjoy the book very much. All in all, an excellent book and a absolute must read for anyone interested in lean, in whatever industry.
Cut production through times by 90% and reduce inventories by 90% & giving the customer exact what they want when they want it! - Review written on October 26, 2006
Rating: 5 out of 5
10 customers found this review helpful, 1 did not.
Lean thinking shift management concern away from assets and finance and focuses them on the perspective of the customer. Value is provided when the supplier gives the customer exactly what they want when they want it and the producer creates value. Lean thinking provides immediate value by converting waste into value. Value is a conscious attempt to precisely define value in terms of a specific product with specific capabilities at a specific price through a dialogue with the customer. Managers need to rethink along product line and not existing assets and technologies.
The value stream has three components: 1. the problem solving task 2. Information management 3. and transformation task. The value stream exposes and finds many steps that create no value and should be immediately avoidable. How does so much waste occur for such a long time? The departments or parties are not accountable nor forced to explain their products, processes, or service to others. Secondly, there exists the matter of confidentiality where non-disclosure creates barriers and artificial dependency. Third, the matter of the obvious circumvents the desire to continual improve and reexamine process and product.
Value stream begins with "one thing at a time" as more efficient than batch processing. Batch processing is the culture of the farmer. The farmer culture has replaced the hunter culture. The hunter culture is more efficient, as it seeks to "build what the customer wants when the customer wants it" or in other words "on-demand production". On-demand production destroys the need for forecasting and lets the customer pull the product from the product when needed. Lean thinking cuts production through times by 90% and reduces inventories by 90%. Batch processing or mass production thinking results in stagnation which leads to cost cutting, an innovation incentive killer.
Lean thinking starts with analysis of flow. The manufacturing process is divided into cells. Each cell represents one or more sequence of assembly and transformation processes. A tub is passed between each cell and triggers a series of events to start in the cell. The parts associated with the tub are built exactly and immediately. Any process or resource that does not contribute value in the flow is removed. Higher demand cells are place at the beginning of the flow. Cells can be run in parallel creating economy of scale load balancing. A critical failure can stop all the production. Quality teams constant analyze the flow for defect and workers in the cell are allowed to respond and communicate problems and suggestions for improvement.
Lean thinking begins with pull. Customers pull products from the producer and remove the need for forecasting and excessive inventories size. Machines are equipped with fast transforming technology allowing for a diverse combination of assembled options for parts and products moving from cell to cell. Lean thinking is better than MRP. Lean thinking removes the slack time in scheduling errors and miscalculations in forecasted quantity amounts and types.
Lean thinking must be applied to all aspects of product creation and delivery. Lean thinking removes any flow issues associated with getting the correct product to the customer, quickly, accurately, and efficiently. Lean thinking replaces mass production process engineering and exposes process weakness and factories have tolerated and managed these failures as a part of the mass production cycles. Lean product exposes these weaknesses and replaces them with more feasible solutions.
Manufacturing Perfection is impossible, however thinking about perfection leads to inspiration and innovative solutions. Lean thinkers bring abundance to the market, transform nonstandard products into standardized products, and increase customer value. The value of lean thinking is continuous improvement in quality, design, and product.
Hot Air and Vague Puffery - Review written on December 29, 2005
Rating: 1 out of 5
44 customers found this review helpful, 15 did not.
I think this book is largely bogus. Sure there is logic in having an efficient system to your manufacturing process and in buying the machines you actually need instead of something too big or too inflexible. But while the Japanese may have ninjas and 'Asian sexual secrets,' they haven't discovered any new principles of manufacturing that we insecure Americans didn't already know a long time ago. Despite the stylish Japanese mumbo-jumbo, there isn't much in this 'lean thinking' that Henry Ford didn't already have figured out by 1914, although the limitations of the technology of that day prevented him from implementing his ideas fully.
Speaking of Henry Ford, among the historical inaccuracies in this book is the oft-repeated untruth that all the millions of Ford Model T cars produced over 19 years were all exactly alike. The truth is that several body styles, ranging from open touring cars to 'Torpedo Roadsters' to closed sedans were produced, and the entire line went through at least two major styling changes and thousands of mechanical improvements.
Some parts of this book just don't make any sense at all, revealing amazingly poor writing on the part of the authors and -- given that this is the revised edition -- an astonishing lack of critical thinking on the part of eager readers. For example, on page 178 it is told how Pratt & Whitney replaced a particularly inefficient turbine blade grinding machine with 'eight simple three-axis grinding machines.' But in the very next paragraph they mention 'each of the nine machines,' and then go on to say, 'The number of parts in the process would fall from about 1,640 to 15 (one in each machine plus one waiting to start and one blade just completed).' Then to top it off, the text is accompanied by a diagram showing a grinding process with eight grinders and two EDM machines. I can see I'm not the only one who flunked math here.
Additionally, the book is full of stories of Japanese lean thinking gurus walking into American factories without advance notice and ordering that all the production machinery be uprooted and repositioned -- immediately. Supposedly, this is done and things brought up to running condition again in six or eight hours, with greatly improved efficiency. Where I come from, we have bothersome things like OSHA rules and the National Electrical Code that prevent us from just sliding around 100 ton presses and precision-levelled CNC machine tools like so many couches and chairs.
Also telling is the example the authors themselves picked to illustrate their concept of 'flow.' One of them asked his daughters, aged six and nine, what would be the best way to fold, address, seal, stamp and mail the monthly issue of their mother's newsletter. The girls naturally replied that you ought to concentrate on one task at a time, and process all the newsletters up to that point before moving on to the next step. But the authors assert that this is wrong, and that this type of work can be done more efficiently by carrying one workpiece through to completion before starting on the next workpiece. Aside from the cruelty of forcing his daughters to walk out to the mailbox and back 547 times, I can tell you from long experience that this is 100% pure BS. Flow is great, as Henry Ford used flow. But to make a blanket statement that it is better to keep one workpiece in hand and pick up ten tools, than it is to keep one tool in hand and pick up ten workpieces, is just plain wrong. It is the tool that requires technique and concentration and uniformity of use, not the workpiece. By spotlighting this ill-chosen example, the authors have revealed in their own introduction a total lack of real-world experience and a disdain for common sense that runs throughout the entire book.
Great, if you like stories about business. - Review written on May 19, 2004
Rating: 1 out of 5
68 customers found this review helpful, 12 did not.
I'm not sure who the audience is for Lean Thinking. Call me naïve, but I assumed it was written by Womack and Jones to help organizations analyze their business processes and eliminate muda (Japanese for "waste"), thereby improving overall performance. However, after reading almost 250 pages of anecdotal success stories, the chapter entitled "Action Plan," where one would assume resides the punch-line of the text, I was met by the profound advice to "Get the knowledge" by hiring one of the numerous experts in North America, Europe or Japan, and read some of the "vast literature" available on lean techniques. Reminds me of the Steve Martin joke where he tells you how to be a millionaire. "First, get a million dollars."
After reading Lean Thinking, I'm struck by the irony that while the authors recommend removing waste from the manner by which your products are delivered to the end customer, they don't take their own advice. The text could have been distilled from 384 pages down to five or six, since there's no real substantive instruction on how to implement lean principles. Then again, maybe I completely misinterpreted the intent of the authors as to their audience and it really was written for the business historian who enjoys reading about how Pratt & Whitney started in 1855. That must be it, because after I ponder the title, I realize that Lean Thinking is for just that, thinking. What I really wanted was a book entitled Lean Doing.
A Roadmap for Efficient Value Creation - Review written on April 23, 2004
Rating: 5 out of 5
9 customers found this review helpful, 4 did not.
Would you like to double productivity, cut development time by 60%, reduce inventory by 65%, reduce throughput time by 95%, reduce capital investment while doubling sales? Pre-existing assets, technologies, practices, organizations and concepts often cause enormous waste, i.e. activity which does not create value. This exciting book is about a way to do more and more with less and less - to create value instead of waste.
Lean Principles
1. Accurately understand VALUE (needs and preferences) from the customer's perspective.
2. Perform VALUE STREAM analysis. This will reveal three types of actions: 1) those that create value, 2) those that do not create value but are unavoidable in the present situation and 3) those that don't create value and are immediately avoidable.
3. After eliminating avoidable waste activities, make the remaining activities continuously FLOW. This requires the elimination of departmentalized "high speed" batch-and-queue "efficiency". It requires quick changeovers, "right-sizing" and close coupling of operations without buffers. The authors state that the results are always a dramatic reduction of effort and improvement in throughput.
4. Because of the radical reduction achieved in throughput time, you now are capable of Just In Time operations. You can now let the customer PULL the product.
5. Finally search for PERFECTION. Perfection is, of course, impossible. But the effort compels progress.
"Just Do It"
The lean approach is to "just do it" with dedicated cross functional product teams which often include suppliers and customers.
The beauty of this system is that it won't work at all unless everything works properly all the time. Thus 100% performance becomes an absolute requirement.
The authors present a number of very interesting case studies in which dramatic results were obtained. They conclude with advice as to how to get started - including a list of available resources. This book is especially well-suited to operations managers, but will also benefit any executive in a company that relies upon operational excellence as a part of their strategy.
(Robert Bradford is CEO of Center for Simplified Strategic Planning and co-author of Simplified Strategic Planning)
A Business Paradox: Less Really Can Achieve More - Review written on November 03, 2003
Rating: 5 out of 5
10 customers found this review helpful, 1 did not.
This is a new and expanded second edition of a book first published in 1996. Of special interest to me was what Womack and Jones had to say in the preface regarding what has since happened to the companies previously discussed. Apparently lean thinking has enabled Toyota, Wiremold, Porsche, Lantech, and Pratt & Whitney to sustain operational excellence and economic prosperity.
Briefly, how do Womack and Jones define lean thinking? It is the opposite of muda (a Japanese) word for anything which consumes resources without creating value. In a word, waste. Lean thinking is lean because "it provides a way to do more and more with less and less -- less human effort, less equipment, less time, and less space -- while coming closer and closer to providing customers with exactly what they want." Lean thinking is thus a process of thought, not an expedient response or a stop-gap solution. The challenge, according to Womack and Jones, is to convert muda into real, quantifiable value and the process to achieve that worthy objective requires everyone within an organization (regardless of size or nature) to be actively involved in that process. Once again, in this new edition they address questions such as these:
1. How can certain "simple, actionable principles" enable any business to create lasting value during any business conditions?
2. How can these principles be applied most effectively in real businesses, regardless of size or nature?
3. How can a relentless focus on the value stream for every product create "a true lean enterprise that optimizes the value created for the customer while minimizing time, cost, and errors"?
In Part IV, Womack and Jones update the continuing advance of of lean thinking. They rack the trend in inventory turns and the progress of their profiled companies. Also of special interest to me was the discussion of what Womack and Jones have learned since 1996 which probably explains why they introduce a new range of implementation tools support value stream mapping initiatives and thereby "to raise consciousness about value and its components, leading to action."
Obviously, even if everyone involved within a given organization is committed to lean thinking, to creating value while (and by) eliminating waste, the process requires specific strategies and tactics to succeed. Hence the importance of the last chapter in this book., "Institutionalizing the Revolution." I presume to suggest that the process of lean thinking never ends. Inevitably, success creates abundance; abundance often permits waste. I also presume to suggest that priorities must first be set so that the implementation of lean thinking process does not inadvertently create or neglect waste in areas which influence the creation of value for customers.
Although highly readable, this is not an "easy read" because it requires rigorous thinking about what is most important to a given organization, rigorous thinking about the root causes (rather than the symptoms) of that organization's problems, and rigorous thinking about the most prudent use of resources to eliminate those problems. Because of the importance of the material which Womack and Jones share, I strongly recommend that decision-makers read and then re-read this book before getting together to exchange reactions to it. Out of that discussion, I hope, will come both a collective commitment to lean thinking and the personal determination of each executive to apply what she or he has learned from this book in operational areas where waste has most diminished value.
Good Book for Introduction to Lean!..need application book - Review written on April 20, 2002
Rating: 5 out of 5
2 customers found this review helpful, 2 did not.
This book was definately informative. Lean thinking is revolutionary in approach. The text reviews a lot of success stories. Would like to see another text that gets more into application, answering questions like...How to set up a kanban system..or How to accomplish quick changeover of machinery.
Would recommend this book as a good starting point!
Great Ideas, But Now How? - Review written on November 13, 2001
Rating: 3 out of 5
6 customers found this review helpful.
Lean Thinking does an excellent job of detailing what is wrong with the standard business processes in North America and pretty much the rest of the world. The authors also do a very good job of introducing (I hadn't yet read The Machine that Changed the World) and explaining their ideas to make clear that there is a much better way available to companies.
I have long been a big believer that all employees are valuable resources that are all to often wasted due to 'right sizing' efforts to achieve immediate monetary targets. Lean Thinking has total employee involvement as a basic pillar of the theory.
The business examples they provide are bulletproof, and definitely make the case that what they suggest can be done.
The problems I had with the book had to do with credibly backing up many of the claims the authors make, like " quality always zooms when flow and pull thinking are put in place together." Is there any hard evidence to back up this assertion? Not in the book. The authors make many guarantees about eye-popping improvements their theory will bring if it is implemented correctly.
Implementation is where I have the biggest problem with this book. Womack and Jones certainly do a good job of explaining their theory and backing it up with impeccable examples, but it all adds up to another book in which the authors tell you what you HAVE to do, but not how to do it. It is my opinion that made yet another contribution to the Knowing-Doing Gap (Pfeffer and Sutton, HBS Press 2000). The great ideas contained in the book lack any real, concrete action steps for successful implementation and so will rarely be successfully implemented.
It is similar to all of the talk about innovation. Everyone knows that it is important to do it, but few actually do it because they don't know how. It's not as simple as snapping your fingers. How do you actually go about involving all of your employees? I myself would involve the Simplex process (1995, The Power of Innovation, M.S. Basadur), but that's just me. The same logic applies to almost every section of the last third of the book. I kept saying to myself, "Wow, that's easier said than done."
The book leaves it to the reader to essentially make it up for themselves to make lean thinking a reality in their organization.
I realize that it would be impossible to provide a step-by-step action plan that would fit any company or situation, but the authors could have done more than offer "Find a change agent." Gee, thanks for the tip! By the end of the book I realized why the implementation side of the book was so thin - the book is a marketing tool for the authors and their associates. Near the end of the book the reader is told to get a sensei, and hey, there happen to be alot of them in Japan you can hire! Also, we, the authors, do speaking engagements if you want to hire us!
The book is definitely a worthwhile read, as it does open the eyes to the reader of a better way of operating, how far away we currently are from it, and how we are all affected by it.
Great Ideas, But Now How? - Review written on November 13, 2001
Rating: 3 out of 5
40 customers found this review helpful, 6 did not.
Lean Thinking does an excellent job of detailing what is wrong with the standard business processes in North America and pretty much the rest of the world. The authors also do a very good job of introducing (I hadn't yet read The Machine that Changed the World) and explaining their ideas to make clear that there is a much better way available to companies.
I have long been a big believer that all employees are valuable resources that are all to often wasted due to 'right sizing' efforts to achieve immediate monetary targets. Lean Thinking has total employee involvement as a basic pillar of the theory.
The business examples they provide are bulletproof, and definitely make the case that what they suggest can be done.
The problems I had with the book had to do with credibly backing up many of the claims the authors make, like " quality always zooms when flow and pull thinking are put in place together." Is there any hard evidence to back up this assertion? No in the book. The authors make many guarantees about eye-popping improvements their theory will bring if it is implemented correctly.
Implementation is where I have the biggest problem with this book. Womack and Jones certainly do a good job of explaining their theory and backing it up with impeccable examples, but it all adds up to another book in which the authors tell you what you HAVE to do, but not how to do it. It is my opinion that made yet another contribution to the Knowing-Doing Gap (Pfeffer and Sutton, HBS Press 2000). The great ideas contained in the book lack any real, concrete action steps for successful implementation and so will rarely be successfully implemented.
It is similar to all of the talk about innovation. Everyone knows that it is important to do it, but few actually do it because they don't know how. It's not as simple as snapping your fingers. How do you actually go about involving all of your employees? I myself would involve the Simplex process (1995, The Power of Innovation, M.S. Basadur), but that's just me. The same logic applies to almost every section of the last third of the book. I kept saying to myself, "Wow, that's easier said than done."
The book leaves it to the reader to essentially make it up for themselves to make lean thinking a reality in their organization.
I realize that it would be impossible to provide a step-by-step action plan that woud fit any company or situation, but the authors could have done more than offer "Find a change agent." Gee, thanks for the tip! By the end of the book I realized why the implementation side of the book was so thin - the book is a marketing tool for the authors and their associates. Near the end of the book the reader is told to get a sensei, and hey, there happen to be alot of them in Japan you can hire! Also, we, the authors, do speaking engagements if you want to hire us!
The book is definitely a worthwhile read, as it does open the eyes to the reader of a better way of operating, how far away we currently are from it, and how we are all affected by it.
A Good Read! - Review written on August 28, 2001
Rating: 4 out of 5
1 customer found this review helpful, 2 did not.
James P. Womack and Daniel T. Jones sound a battle cry against institutional waste. What a pity, they say, that so much time, energy, and money are needlessly thrown away. They urge executives to redefine their values based on customer experiences and to track the flow of value from manufacturing to final sale. The result, they promise, is that companies will save time, energy and money - and will revolutionize their entire organizations in the bargain. Not content to simply study western problem-solving methods, the worldly authors guide their readers through a wide array of Japanese manufacturing wisdom as well. Their generosity and depth make this a pleasantly informative book, which defies the current trend in business books of proclaiming doom and then offering a quick fix. This book would rather proclaim hope, which is just one of the reasons that we [...] recommend it to serious managers who want to trim the fat.
Good Conceptual Overview of Eliminating Waste in Producing - Review written on April 22, 2000
Rating: 5 out of 5
92 customers found this review helpful, 3 did not.
Unlike most cost-reduction books, Lean Thinking has a strong conceptual underpinning for thinking about improving your operations. The authors move beyond the narrowest application of the lean manufacturing model (the original Toyota system) to explore key concepts like value (what do the customers want? as opposed to what do they choose from the limited options we give them?), flow (continuous production is faster and more efficient than batch processing), pull (letting immediate demand determine what is produced rather than sales projections), and perfection (thinking through the ideal way to do things, rather than just improving from where you are today somewhat). Providing this conceptual framework makes it easier to understand the benefits of operating a lean enterprise. People who did not understand the message in Direct from Dell would find Lean Thinking to be a useful framework.
One of the strengths of this book is that it is deliberately full of examples of companies which took traditional methods in existing plants and converted them into lean operations. I know of no other set of case histories half as useful on this subject.
The key limitation of this book is that most people new to lean manufacturing would not be able to implement solely using the book as a guide. The conceptual perspective, while being uniquely valuable, leaves the inexperienced person with few guideposts. Some of the key requirements are simply described as "get the knowledge" and so forth. As a follow-up, I suggest that the authors team with those who have done this work and write a hands-on guide. Much more benefit will follow.
If you are interested in understanding how a new business model of how to provide your products and/or services might work and what the benefits might be, Lean Thinking is a good place to start. Most executives and operations managers have never seriously considered going from batch to cell-based production. This will open your eyes to the potential.
Based on my many years of experience with improving business processes, you will actually need to go visit some of the companies cited to fully understand the issues and what must be done. I know that visits to Pratt & Whitney can be arranged and are very insightful. You might try to start with that one.
One area may turn you off. The cited examples moved forward pretty ruthlessly. That may not be your cup of tea. You may be reminded of some of the early reengineering. My own experience is that such changes can be done in a more positive and constructive way. Stay open to that possibility as you read the cases. They basically all use command and control to create more flexibility. You can also use other methods like those encouraged in The Soul at Work and The Living Company to create these kinds of results. Keep that in mind.
I recommend that everyone who uses batch and sequential operation methods read this book. It will open your eyes to great potential to grow faster and more profitably.
Good Top-Level Book, Good Explanation of Lean Principles - Review written on July 21, 1999
Rating: 4 out of 5
104 customers found this review helpful, 3 did not.
Lean Thinking has its strengths. The authors do a good job of explaining the principles behind lean manufacturing and show good data from varied case studies to convey the value in implementing lean manufacturing. They make a strong case that these principles can reduce waste and costs, reduce lead times, and improve quality and resource utilization. This book is not a practical guide, however. I found it to be somewhat of a "warm and fuzzy" overview aimed at top execs and business strategists as opposed to plant, production, and manufacturing managers. The details of certain key roadblocks aren't addressed, for example: 1. Across the board firings of managers who oppose lean principles. Not as easy as it sounds. 2. Vastly improving changeover times and rearranging big machinery without a generous budget. 3. Making radical changes on your shop floor despite heavy production demands. 4. Dealing with a union that is not willing to concede the initial layoff without a massive war, despite a company crises. There are many others. One thing that I got a kick out of - when Japanese consultants were called in to implement lean changes in a plant, they began taking machinery apart and moving it themselves. At many plants I've seen, if a foreign consultant were to do that, he'd probably be shot before he made it out of the parking lot. Though the authors are self-admitedly theorists and the book lacks a lot of "nuts and bolts" detail, they do a good job of teaching the principles and laying out the results.