Eliyahu M. Goldratt Quotes
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The most demanding assumption that TPS makes about the production environment is that it is a stable environment. And it demands stability in three different aspects.
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Ford’s starting point was that the key for effective production is to concentrate on improving the overall flow of products through the operations. His efforts to improve flow were so successful that, by 1926, the lead time from mining the iron ore to having a completed car composed of more than 5,000 parts, on the train ready for delivery, was 81 hours!3 Eighty years later, no car manufacturer in the world has been able to achieve, or even come close, to such a short lead time.
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So I’ve got limits on how fast I can go—both my own (I can only go so fast for so long before I fall over and pant to death) and those of the others on the hike. However, there is no limit on my ability to slow down. Or on anyone else’s ability to slow down. Or stop. And if any of us did, the line would extend indefinitely. What’s happening isn’t an averaging out of the fluctuations in our various speeds, but an accumulation of the fluctuations. And mostly it’s an accumulation of slowness—because dependency limits the opportunities for higher fluctuations. And that’s why the line is spreading. We can make the line shrink only by having everyone in the back of the line move much faster than Ron’s average over some distance.
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We’re dealing with the fact that we haven’t got any idea of what we’re doing. If we’re just looking for some arbitrary order, and we can choose among so many possibilities, then what’s the point in putting so much effort in collecting so much data? What do we gain from it, except the ability to impress people with some thick reports or to throw the company into another reorganization in order to hide from the fact that we don’t really understand what we’re doing? This avenue of first collecting data, getting familiar with the facts, seems to lead us nowhere. It’s nothing more than an exercise in futility. Come on, we need another way to attack the issue.
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You forced us to view production as a means to satisfy sales. I want to change the role production is playing in getting sales.
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When a proto-type—a new initiative—doesn't work, we face two alternatives: one is to bitch about reality and the other is to harvest the gift it just gave us, the knowledge of what has to be corrected.
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Never let something important become urgent.
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I smile and start to count on my fingers: One, people are good. Two, every conflict can be removed. Three, every situation, no matter how complex it initially looks, is exceedingly simple. Four, every situation can be substantially improved; even the sky is not the limit. Five, every person can reach a full life. Six, there is always a win-win solution. Shall I continue to count?
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While they go get the others, I figure out the details. The system I’ve set up is intended to "process’’ matches. It does this by moving a quantity of match sticks out of their box, and through each of the bowls in succession. The dice determine how many matches can be moved from one bowl to the next. The dice represent the capacity of each resource, each bowl; the set of bowls are my dependent events, my stages of production. Each has exactly the same capacity as the others, but its actual yield will fluctuate somewhat.
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But when the nature of the constraint has changed, one would expect to see a major change in the way we operate all non-constraints.
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There is an explanation to these companies’ failure to implement Lean; an explanation that is apparent to any objective observer of a company like Hitachi Tool Engineering. The failure is due to the fundamental difference in the production environments. When Taiichi Ohno developed TPS, he didn’t do it in the abstract; he developed it for his company. It is no wonder that the powerful application that Ohno developed might not work in fundamentally different production environments.
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Somewhere in the scientific method lies the answer for the needed management techniques. It is obvious.
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What are we asking for? For the ability to answer three simple questions: ‘what to change?’, ‘what to change to?’, and ‘how to cause the change?’ Basically what we are asking for is the most fundamental abilities one would expect from a manager. Think about it. If a manager doesn’t know how to answer those three questions, is he or she entitled to be called manager?
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I sit there marveling that we’re going to reduce the efficiency of some operations and make the entire plant more productive.
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All those calls and meetings were fire fighting. I remind myself. No fires, no fighting. Now, everything is running smoothly— almost too smoothly.
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Okay, so why was the plant built in the first place? It was built to produce products. Why can’t that be the goal? Jonah said it wasn’t. But I don’t see why it isn’t the goal. We’re a manufacturing company. That means we have to manufacture something, doesn’t it? Isn’t that the whole point, to produce products? Why else are we here?
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If synchronized efforts are required and the contribution of one link is strongly dependent on the performance of the other links, we cannot ignore the fact that organizations are not just a pile of different links, they should be regarded as chains.
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We had physical constraints that helped us to focus our attention, to zoom in on the real policy constraint. That isn’t the case in the division. Over there we have excess capacity going through our ears. We have excess engineering resources that we succeed so brilliantly in wasting. I’m sure that there is no lack of markets. We simply don’t know how to put our act together to capitalize on what we have.
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In order to significantly increase sales we have to increase the perception of value of the market for our products.
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You know what, it really highlights another problem. Changing the measurements’ scale of importance, moving from one world into another, is without a doubt a culture change. Let’s face it, that is exactly what we had to go through, a culture change. But how are we going to take the division through such a change?
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Science is simply the method we use to try and postulate a minimum set of assumptions that can explain, through a straightforward logical derivation, the existence of many phenomena of nature.
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I reach for my briefcase, take out a yellow legal pad and take a pen from my coat pocket. Then I make a list of all the items people think of as being goals: cost-effective purchasing, employing good people, high technology, producing products, producing quality products, selling quality products, capturing market share. I even add some others like communications and customer satisfaction. All of those are essential to running the business successfully. What do they all do? They enable the company to make money. But they are not the goals themselves; they’re just the means of achieving the goal.
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Whenever we think we have final answers progress, science, and better understanding ceases.
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What is the real goal? Nobody here has even asked anything that basic.