• 17 Jul 2026Visualizing Medical Code HierarchyJohn D. Cook
• 17 Jul 2026Regular expressions for HCPCS codesJohn D. Cook
• 17 Jul 2026Regular expression speed and error ratesJohn D. Cook
• 17 Jul 2026Exploding cyclosporiasis outbreakFlowingData
• 17 Jul 2026Generated book slopFlowingData
• 17 Jul 2026George Lucas on the horse and buggyFlowingData
• 16 Jul 2026Application error probably caused tears in Reflecting PoolFlowingData
• 16 Jul 2026✚ Ideas, data, and graphicsFlowingData
• 16 Jul 2026cosmos.gl, a WebGL library for visualizing network graphsFlowingData
• 15 Jul 2026Geography guessing game, so you can see how bad you are at locationsFlowingData
• 14 Jul 2026ICD-10 chapters and code lettersJohn D. Cook
• 14 Jul 2026Map of AI archetypesFlowingData
• 14 Jul 2026Maintaining a vibe-coded internetFlowingData
• 13 Jul 2026World Cup data portraitsFlowingData
• 12 Jul 2026Posterior varianceJohn D. Cook
• 12 Jul 2026Posterior meanJohn D. Cook
• 11 Jul 2026Progress on Gilbreath’s conjectureJohn D. Cook
• 08 Jul 2026Functional SkillsMathematics, Learning and Technology
• 06 Jul 2026Reproducing a geometry theorem diagramJohn D. Cook
• 06 Jul 2026e approximationJohn D. Cook
• 05 Jul 2026What I’m reading: Summer 2026 editionLaura Albert's Punk Rock Operations Research
• 04 Jul 2026Does additional data always reduce posterior variance?John D. Cook
• 01 Jul 2026DNA Sequence Alignment and KingsJohn D. Cook
• 30 Jun 2026Distinguishing variables from parametersJohn D. Cook
• 30 Jun 2026Silver Rectangles and the Ways of KingsJohn D. Cook
• 30 Jun 2026Derivative equals inverseJohn D. Cook
• 29 Jun 2026Who you gonna believe: Grok or the docs?John D. Cook
• 28 Jun 2026End of term…Mathematics, Learning and Technology
• 28 Jun 2026Brace expansion treeJohn D. Cook
• 27 Jun 2026When will the decimals in a/b repeat?John D. Cook
• 27 Jun 2026Height of harmonic numbersJohn D. Cook
• 27 Jun 2026Writing down harmonic numbersJohn D. Cook
• 25 Jun 2026Hart’s theoremJohn D. Cook
• 25 Jun 2026Incircles and Excircles of Pythagorean trianglesJohn D. Cook
• 25 Jun 2026Consecutive Pythagorean triangle sidesJohn D. Cook
• 25 Jun 2026The Star Trek lemmaJohn D. Cook
• 24 Jun 2026Regular expressions that work “everywhere”John D. Cook
• 22 Jun 2026Lobachevsky’s integral formulaJohn D. Cook
• 22 Jun 2026Queens on a prime order boardJohn D. Cook
• 20 Jun 2026All pieces on a 6 by 5 boardJohn D. Cook
• 17 Jun 2026Formalizing a ring theorem with Lean 4 and ClaudeJohn D. Cook
• 16 Jun 2026Partial fraction decompositionJohn D. Cook

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