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Reading The Idea FactoryJon Gertner

Learning this month Correlation clustering, and why transitive closure quietly ruins a knowledge graph.

Fact of the month

A library catalogue is a knowledge graph. We just took 150 years to say it that way. Aug 2026 · Something I keep coming back to. · all marginalia

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Question · physics If information cannot be destroyed, what happens to the index? Aug 2026

Question · economics Why does better information sometimes make a market worse? Jul 2026

Question · maths Similarity is not transitive. So how does anything ever get grouped? Jun 2026

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