2026-08-09
The dangerous answer isn't “I don't know.” It's “$0.”
A column called free, a year of NULLs, and a query that reported a year of revenue as zero without a single error. Why reviewing SQL can't catch a silent error — and what does.
founder essays
Writing
Occasional essays on believing numbers — why confident-and-wrong is the failure that matters, and what it takes to ship an analyst that knows the difference.
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