Notes
The argument behind the post
Longer arguments behind the posts. Written only where no course reference already covers the ground, so there are deliberately few.
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Three examples beat three paragraphs of adjectives
Describing what 'good' means is a specification problem. Showing it is easy — and the examples double as a test harness.
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Your rules file is instructions, not documentation
Why a CLAUDE.md written for humans gets treated as background reading, and what earns its place in one.
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A 1M window is not an instruction to use 1M tokens
Large context windows made it possible to paste everything. The research says relevance still beats volume — here is the method behind that claim.
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You pay for the whole conversation, every time
Why a long chat gets slower and more expensive with every turn, and what the API is actually doing when you hit send.