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Krugman Says AI Is Eating Our Brains -- AI Brief June 29
Description
Good day, humans. Paul Krugman thinks the cleverest thing AI ever pulled off was making the rest of us a little dumber — and he isn’t entirely joking. Meanwhile Satya Nadella wants every company on earth to grow its own model, a developer handed coding agents a memory and a heartbeat, Austria is trying to poach Anthropic out of California, and China’s free models just matched Anthropic’s best at finding security holes. Five stories, one Context Window.
Krugman: AI Might Be Eating Your Brain
What happened: Nobel-winning economist Paul Krugman published a piece arguing the biggest cost of generative AI won’t be jobs or productivity — it’ll be the slow erosion of our ability to think for ourselves, with the worst damage landing on basic learning.
Why it matters: It names something you can feel. Every time ChatGPT or Claude does the thinking, the mental muscle that used to do it gets a little weaker — and schools are so deep in a cheating crisis that handwritten blue-book exams are making a comeback.
What everyone’s saying: He’s no lone crank: a Brookings report and a RAND survey both found students who lean on AI show measurable drops in retention and critical thinking — and most of those students already suspect it’s hurting them.
My read between the lines: There’s a delicious irony in a man typing his warning into a Substack that an AI will cheerfully summarize for you. The sharper point: the productivity debate misses where the real bill lands — a generation from now, when nobody remembers how to do the thing the machine quietly took over.
📖 Further reading: AI Is a Trust Problem, Not a Tech Problem — Krugman’s cognitive worry is the flip side of the trust collapse we mapped here.
Krugman’s worried AI is making us outsource our thinking. Fair — but there’s a difference between offloading your judgment and offloading your busywork. Viktor is an AI agent that lives in your Slack and plugs into 3,000+ tools, then actually does the work: builds the dashboard, drafts the campaign, ships the report, writes the code. Not a chatbot you babysit — a coworker who delivers. New readers get $50 off their first month. Hire Viktor →
Nadella: Build Your Own AI or Die
What happened: Microsoft CEO Satya Nadella said there should be “as many models in the world as firms in the world,” arguing that any company outsourcing its learning to a frontier lab is handing away the one thing that makes it a company.
Why it matters: For years the pitch was “just plug into GPT or Claude.” Now Nadella — who sells exactly that — says the real moat is your own data and your own “learning loop,” baked into a model only you own.
What everyone’s saying: It reads as a push toward a multi-model world where your company’s context sits on top of interchangeable foundation models you can swap at will — the same stack Microsoft showed off at Build 2026.
My read between the lines: Follow the incentives. Nadella runs Azure, which would love to rent you the GPUs, eval tools, and pipelines to build tha