Long-running field notes on building with LLMs in production — evals, inference systems, prompts that survive contact, and the failure modes nobody puts in the docs.https://sparsenote.com/https://sparsenote.com/blog/hello-world/https://sparsenote.com/blog/hello-world/Long-running model loops look great on the benchmark and quietly collapse in real loops. A small forensic look at where attention is actually spent.Tue, 12 May 2026 00:00:00 GMThttps://sparsenote.com/blog/pyrenees-packing/https://sparsenote.com/blog/pyrenees-packing/Eight days, one carry-on, two pairs of socks too many. A list, and what I would change.Sat, 18 Apr 2026 00:00:00 GMThttps://sparsenote.com/blog/hokkaido-rail/https://sparsenote.com/blog/hokkaido-rail/The Soya Main Line in late winter, with a thermos of hojicha and one bad paperback.Mon, 02 Mar 2026 00:00:00 GMThttps://sparsenote.com/blog/one-book/https://sparsenote.com/blog/one-book/A small argument against the kindle, with apologies to its inventors and to the airline that lost my last one.Sat, 14 Feb 2026 00:00:00 GMThttps://sparsenote.com/blog/cafes/https://sparsenote.com/blog/cafes/A list, an apology to the proprietors of each, and a small map drawn from memory.Tue, 27 Jan 2026 00:00:00 GMThttps://sparsenote.com/blog/day-off/https://sparsenote.com/blog/day-off/No itinerary, one museum, a long walk, and dinner before sunset. A theory of unhurried days.Fri, 09 Jan 2026 00:00:00 GMT