Joost Vles writes about a subject that I have long had an interest in and that is queuing theory. I have noticed that airports and banks tend to favor the single line system but grocery stores go for the separate queues. He points out what should be obvious but that some people do not seem to realize, and that is that a single long queue where the people break at the head of it to go to the next available server is better than each server having their own queue.
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