Blog

Notes from the evidence side of software.

Engineering, grounded AI, and developer tools — mostly lessons pulled out of the projects on this site.

Latest

August 24, 2026 3 min

One idea, two stacks: what transferred and what didn't

RepoSignal and Gatehouse both turn GitHub state into deterministic judgments — one in TypeScript and Next.js, one in C# and .NET. Building both taught me which engineering actually belongs to the stack.

Lessons Learned

August 22, 2026 3 min

RAG: retrieval quality before model quality

When a grounded system gives a bad answer, the model is rarely the first place to look. Retrieval is where RAG systems are won, lost, and debugged.

AI / RAG

August 19, 2026 3 min

Building deterministic systems around AI

The useful question isn't whether to use a language model. It's deciding — precisely, in the architecture — what the model is allowed to touch.

AI / RAG

August 16, 2026 3 min

Missing data is not failure

The most common way software lies is by turning “I don't know” into a zero. Designing for honest unknowns changes your types, your tests, and your users' trust.

Engineering

August 11, 2026 3 min

Developer tools should explain before they automate

The tools I trust narrate what they observe and leave the verb to me. Three shipped projects later, 'read-only by design' has become my default posture for a v1.

Developer Tools

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