Simon Willison’s Weblog

An interactive explanation of quadtrees (via) Neat explorable explanation of quadtrees, using interactives built on top of D3.

Posted 16th October 2017 at 2:47 pm

Recent articles

Wilson Lin on FastRender: a browser built by thousands of parallel agents - 23rd January 2026
First impressions of Claude Cowork, Anthropic's general agent - 12th January 2026
My answers to the questions I posed about porting open source code with LLMs - 11th January 2026

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