Good lesson here. Christian Laesser was playing around with receipt data and initially thought he had a fun pattern at hand. It looked like the shopper always put things in his or her cart in the same order every time. It turns out though that the order just came from the computer ordering items by category. It had nothing to do with shopping order.

Familiarize yourself with your data source before you go deep diving for insights.

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Nathan Yau

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