Simon Willison’s Weblog

Mr. Penumbra's Twenty-Four-Hour Book Store. Enormously entertaining short story about data visualisation and creepy San Francisco bookshops by Robin Sloan.

Posted 12th June 2009 at 6:07 pm

Recent articles

Video + notes on upgrading a Datasette plugin for the latest 1.0 alpha, with help from uv and OpenAI Codex CLI - 6th November 2025
Code research projects with async coding agents like Claude Code and Codex - 6th November 2025
A new SQL-powered permissions system in Datasette 1.0a20 - 4th November 2025

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