There’s an old business maxim dating to the California gold rush: it’s easier to make money selling picks and shovels to aspiring miners than to strike it rich finding gold. Artificial intelligence is in a picks-and-shovels phase right now. If gold, in this metaphor, is artificial general intelligence—a machine smarter than a human—or some version of a digital god, then tech companies are snapping up the tools to create one, including graphics-processing units, data centers, and trained A.I. models. That scramble is why Mark Zuckerberg is paying a twenty-four-year-old A.I. researcher two hundred and fifty million dollars to work at Meta, and why Sam Altman , the C.E.O. of OpenAI, recently said that the company would spend “trillions of dollars” building infrastructure. It’s why Google sp

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