What every lesson gives you
A video
Watch the failure, the fix, and the proof on a real machine.
A written walkthrough
The same lesson in text, with complete source for every file it touches.
A checkpoint
One tested commit per lesson, plus a patch you can apply with
git apply.A receipt
The smallest test or measurement that proves the lesson worked.
The learning loop
Each lesson follows the same five steps:- Start from the previous checkpoint and reproduce the limitation.
- Look at the symptom before we explain its cause.
- Find the layer that is actually wrong: model lifecycle, transport, geometry, reasoning, state, resilience, evaluation, or network.
- Apply only the change that fixes it.
- Run the smallest test that proves it, then see it in the product.
One rule across every project
A model proposes. Your application decides what becomes permanent. A person approves anything that matters. OCR becomes evidence, not a redaction. A parsed receipt becomes a draft transaction, not a balance.Pick a path
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