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Newsletter · By Phelisia Jeruto · English · Official site

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  1. Issue · Jul 10, 2026

    The Patient Who Existed Twice (opens the original)

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    Subscribe nowThis is the third essay in the Analytics Engineering series. Last week we covered fact tables: what they are, what goes inside them, and why the grain decision determines whether every number you produce is trustworthy. This week we build the other half of the model. If you are landing here for the first time, start with the grain essay, then the fact table essay, then come back. The foundation matters.The report showed two different engagement scores for

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