Quality alone cannot be the goal. It’s important. But it’s not the goal. - Eliyahu M. Goldratt

I write down the three measurements which Lou and I agreed are central to knowing if the company is making money: net profit, ROI and cash flow.

They’re measurements which express the goal of making money perfectly well, but which also permit you to develop operational rules for running your plant,” he says. “There are three of them. Their names are throughput, inventory and operational expense.

A third way to waste a bottleneck’s time is to make it work on parts you don’t need.” “You mean spare parts?” asks Bob. “I mean anything that isn’t within the current demand,