Simon Willison’s Weblog

method_missing: best saved for last. My least favourite thing about Ruby is the cultural tendency towards introducing weird new bugs in other people’s code.

Posted 7th February 2007 at 2:16 pm

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

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