Eliyahu M. Goldratt Quotes

Companies are so immersed in the mentality of saving money that they forget that the whole intention of a project is not to save money but to make money.

You’re right,” I say. And then, “It’s a little odd to call the market or the system of material release a bottleneck. Why don’t we change the word, to . . .” “Constraint?” Stacey suggests. We correct it on the board. Then we just sit there admiring our work.

productivity is the act of bringing a company closer to its goal. Every action that brings a company closer to its goal is productive. Every action that does not bring a company closer to its goal is not productive.

So this is the goal: To make money by increasing net profit, while simultaneously increasing return on investment, and simultaneously increasing cash flow.

What is needed is just the courage to face inconsistencies and to avoid running away from them just because “that’s the way it was always done”.

With the bottlenecks more productive now, our throughput has gone up and our backlog is declining. But making the bottlenecks more productive has put more demand on the other work centers. If the demand on another work center has gone above one hundred percent, then we’ve created a new bottleneck.

We need financial measurements for sure — but we don’t need them for their own sake. We need them for two different reasons. One is control; knowing to what extent a company is achieving its goal of making money. The other reason is probably even more important; measurements should induce the parts to do what’s good for the organization as a whole.

In summary, both Ford and Ohno followed four concepts (from now on we’ll refer to them as the concepts of flow): Improving flow (or equivalently lead time) is a primary objective of operations. This primary objective should be translated into a practical mechanism that guides the operation when not to produce (preventsoverproduction). Ford used space; Ohno used inventory. Local efficiencies must be abolished. A focusing process to balance flow must be in place. Ford used direct observation. Ohno used the gradual reduction of the number of containers and then gradual reduction of parts per container.

Flow means that inventories in the operation are moving. When inventory is not moving, inventory accumulates. Accumulation of inventory takes up space. Therefore, an intuitive way to achieve better flow is to limit the space allowed for inventory to accumulate. To achieve better flow, Ford limited the space allotted for work-in-process between each two work centers.

[Operating expense is defined as] all the money the system spends in turning inventory into throughput.

I’m talking about a production employee who is idle because there is no product to be worked on.” “Yes, that’s always bad,” I say. “Why?” I chuckle. “Isn’t it obvious? Because it’s a waste of money! What are we supposed to do, pay people to do nothing? We can’t afford to have idle time. Our costs are too high to tolerate it. It’s inefficiency, it’s low productivity — no matter how you measure it.” He leans forward as if he’s going to whisper a big secret to me. “Let me tell you something,” he says. “A plant in which everyone is working all the time is very inefficient.

The entire bottleneck concept is not geared to decrease operating expense, it’s focused on increasing throughput.

I still claim that there are only few constraints. Our division is too complex to have more than a very few independent chains. Lou, don’t you realize that everything we mentioned so far is closely connected? The lack of sensible long-term strategy, the measurement issues, the lag in product design, the long lead times in production, the general attitude of passing the ball, of apathy, are all connected. We must put our finger on the core problem, on the root that causes them all. That is what actually is meant by identify the constraint. It’s not prioritizing the bad effects, it’s identifying what causes them all.

For a foreman, heat-treat seems like a very small kingdom, not much of a prize. There is nothing intrinsically attractive about running that operation, and having only two people to manage makes it seem like no big deal. To prevent it from seeming like a demotion to them, I make a point to go down there periodically on each of the shifts. In talking to the foreman, I drop some rather direct hints that the rewards will be great for anyone who can improve the output of heat-treated parts.

Throughput,” he says, “is the rate at which the system generates money through sales.