Guides
Working with an assistant, measured
Short pieces about the numbers an AI coding session produces — what they are, what they are not, and which ones change a decision. Each one is written from something we measure rather than around it, which is also why there are three of them and not thirty.
Why your assistant re-reads everything, and what it costs
Most of a Claude Code turn is context you have already paid to send once. Here is how to tell whether you are paying twice.
6 min read
What “percent written by AI” can and cannot tell you
The number is easy to produce and easy to misuse. What it counts, what it misses, and the questions it genuinely answers.
5 min read
Reading a token bill without overstating it by 10×
Four numbers, four prices. Adding them up is how people end up off by an order of magnitude.
4 min read