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OpenAI's CEO and Product Chief Are Fighting Over What They Actually Sell
Human Imperative

OpenAI's CEO and Product Chief Are Fighting Over What They Actually Sell

OpenAI's CEO and new product chief are pulling in opposite directions on what the company actually sells. The Signal Sam Altman wants OpenAI to be an AI research lab that happens to make products. Fidji Simo, the former Instacart CEO who joined as Chief Product Officer in January, wants OpenAI to be a product company that happens to do research. This isn't philosophical hairsplitting. It&

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Wisconsin economists prove AI tutors only work when they refuse to give answers
Human Imperative

Wisconsin economists prove AI tutors only work when they refuse to give answers

University economists just proved that AI tutors work, but only if you build them to withhold answers. The Signal Two economists at the University of Wisconsin, La Crosse ran a real experiment with 140 undergrads in spring 2025. They built "Macro Buddy" using ChatGPT's custom GPT feature, trained it to guide students through reasoning instead of spitting out answers, and tested it against traditional study

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AI boom could make venture capitalists obsolete within a decade
Human Imperative

AI boom could make venture capitalists obsolete within a decade

The same AI boom making VCs rich might be the thing that makes them obsolete. The Signal Venture capital has run on the same playbook for 50 years. Ten-year funds. 2-and-20 fees. Power law returns where 95% of gains come from 5% of firms. The model works because founders need things they can't get themselves: capital, talent, infrastructure, distribution. Scarcity is the entire value

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