This quick video shows how the research by a 19th century German telephone engineer gave us the best checkout line system. As popularized by banks and Whole Foods, that’s the one where one line feeds all the checkout counters instead of people queuing for individual registers. It also goes into why the other lane always seems to be moving faster. It’s not just your perception; in a strange paradox, it is just mathematically more likely that the line you are in is more likely to be moving slower than the others.

(Thanks to Jared!)

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