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73 posts, newest first, grouped by year. Below that, the tags that cut across sections — the price posts, the ones built on open data, the ones whose whole job was cross-checking two sources. Sections themselves are on the home page; the short pieces are on Notes.

2026

Tags

Sources and method 16 posts
How a number was arrived at: which record it came from, what the second source said, and where the two disagreed.
Prices 22 posts
What something costs and who pays it — model calls per task, groceries by channel, a month of city living.
Open data 14 posts
The dataset is public and named, so anyone can pull the same figures again and arrive at the same row.
AI evaluation 3 posts
How AI work gets measured: an eval set that ages, error rates in a support bot, pass rates per task.
Rails and infrastructure 8 posts
The plumbing behind the behaviour — payments, parcels, platforms — and why the defaults look different here.
Reference pages 25 posts
Short pages meant to be kept: tables, indices and checklists you come back to.
Site notes 3 posts
How this site is made, what it ships, and what it refuses to do.