Notes from
the work.

Software, systems, and the things I’m learning along the way. From first principles to AI in production.

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A little theory. A lot of practice.

Paper charts with an olive scatter plot, histogram, and data table on a beige desk

Data7 min read

Separate events from periodic snapshots

Keep inventory movements separate from closing balances, check missing warehouse coverage, and reconcile state with changes under an explicit reporting boundary.

25 Oct 2026

Foundation

Data7 min read

Declare the grain of an analytical table

Define what one analytical row represents, keep receipt and line measures separate, and distinguish a missing line from an observed zero with executable SQL.

13 Oct 2026