Engineered Intelligence
Chris EllisAI Engineering insights from the trenches – building and deploying AI systems and the changes in Engineering Practice without the hype.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 50 | Founded | a year ago | Last Issue | 4 days ago |
| Active | |||||
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engineeredintelligence.substack.comLatest Issues
The Regeneration Contract
I was listening to Charity Majors on The Pragmatic Engineer when she reached for Chad Fowler’s Phoenix Architecture. Gergely Orosz read Fowler’s line back at her: “never fix a running thing, replace it.” Once rewriting is cheap, editing in...
Windows on Black Boxes
Kent Beck wrote the book on test-first development, and JUnit with it. So when he joined Facebook in 2011 and shipped his first feature, he did the Kent Beck thing and wrote unit tests for it.
He caused a site event anyway. Some other coup...
Ed Catmull: Strong Principles
Pulled from the Founders podcast interview (David Senra × Ed Catmull, co-founder of Pixar). Source: transcript.
Two through-lines worth holding onto first:
- Nearly every principle is about designing a mechanism to defeat a known human...
Why It’s an Iterator, Not a Channel
I’m wiring OpenAI into Google’s Agent Development Kit, the Go one. ADK is model-agnostic by design, but the Go SDK ships only a Gemini provider (and an Apigee gateway), no OpenAI adapter. So to use another model you implement its `model.LLM...
A Philosophy of Skill Design
I went to move my skills to Codex last week, and they disappeared.
Not deleted. Just invisible. Claude Code reads my skills the way I expect, and Codex didn’t register them the same way. So I sat there about to wire a few back up by hand,...
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