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Sunday, August 2, 2026 · about a 2 minute read

AI Does Math, Agents Annoy Coworkers, and a Medieval Cheat Sheet

Today the news keeps circling the same quiet question: what happens when AI starts doing the work we thought only experts could do, and who actually controls it?

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Simon WillisonResearch
Ten advances in mathematics and theoretical computer science

OpenAI published ten mathematical results that AI systems helped produce, following Anthropic doing something similar with cryptography last week. If your work involves any kind of complex analysis or formal reasoning, the window for 'AI can't do that' is getting smaller and worth tracking.

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Simon WillisonAgents
Quoting Greg Brockman

Greg Brockman noted that even OpenAI employees, who hook ChatGPT into Slack, get annoyed when a colleague's AI contacts them directly asking for help. The lesson is simple: people are fine with automation until it shows up in their inbox pretending to be a person.

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Simon WillisonPolicy
Open letters about AI development

Simon Willison rounded up the recent wave of open letters about AI development, which have been piling up from researchers, companies, and advocates. When this many people feel the need to write formal letters, it usually means the informal conversations are not going well.

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Hacker NewsResearch
Artificial Intelligence: Ars Notoria and the Promise of Instant Knowledge

This essay looks at the Ars Notoria, a medieval manuscript that promised students instant knowledge through prayers and magic diagrams before exams. The dream of downloading expertise straight into your brain is genuinely ancient. What is new is that the current version of that dream, a language model that can pass a bar exam, actually works, sort of, and understanding what 'sort of' means is the whole game.

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Want the slow, plain-English version of why this matters? This is exactly the kind of idea the book was written to unpack, one light-switch analogy at a time.JPWExplained properly in the book
Simon WillisonTools
Oxide and Friends: The Open Weight Revolution with Simon Willison

Simon Willison joined a podcast to talk about AI models, meaning models whose underlying numbers are public and can be run by anyone. If the last few years of AI felt like something happening to you, open-weight models are where the conversation shifts to something you could actually participate in.

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That's today. See you tomorrow.

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Just Predicting Words book cover

The book behind this newsletter

Just Predicting Words

How ChatGPT, Claude, and Modern AI Actually Work

The trick is small. The world it built is not.

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