The Secrets of Super-Efficient Grocery Shopping

I used to work for an operational consulting firm. (And yes, The Goal was required reading when you joined.) We would travel a lot, and when you are waiting at airport security with a group of operations consultants, you naturally discuss how to improve the rate at which travelers pass through security. The worst offense is when the TSA has only one person checking IDs, and two or more X-ray lines running, so that the X-ray machines sometimes sit idle. This seems like a terrible staffing choice because you are bottlenecked at a step that is very inexpensive to expand. Meanwhile, you have let the most expensive step (the X-rays) sit idle, wasting the cost of the machine and of the two to three person staff. Much better to simply shift one more person to check IDs, right?

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