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Occasional notes.

Short essays from the practice — observations from twenty years of product, engineering, and applied-AI work at close range. Published when there is something worth saying, not on a schedule.

March 2026

The Evals Are the Product

Every enterprise LLM system will hit a moment where the team argues about whether the model got better. If nobody in the room can produce a number, the argument is not resolvable and the system is not maintainable.

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