THE LIVE PUBLICATION
The journal.
Ideas, observations, and useful rabbit holes.
A little engineering. A little design. A broader point of view.
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Why Your Database Index Is Not Being Used
A working guide to the reasons Postgres ignores an index you were sure it would use, and how to read the plan instead of guessing at it.
The Typography Decisions That Actually Change Reading
Five typographic choices measurably change how much of a page people read. Most redesigns spend their effort on the other forty that do not.
RAG Is Not a Database Problem
Teams reach for a vector database on day one and spend the next month discovering that retrieval quality was never about the store they picked.
Index Funds Are Boring on Purpose
The case for passive investing is not that markets are efficient. It is that costs are certain, forecasts are not, and behaviour is the real variable.
Zone 2 Training Without a Lab
How to find your easy aerobic pace using conversation, breathing and a heart-rate strap, and why going slower is what makes the hard days work.
Salt Is Four Decisions, Not One
When you salt, which salt you use, how you distribute it, and how you taste for it are separate choices, and each one changes the result.
Heat Pumps Really Do Work in the Cold
The objection that heat pumps fail in winter comes from equipment sold two decades ago. The physics, and the field data, now say something different.
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