Bill Gates has flipped from AI evangelist to something closer to a doomsday prepper. The Microsoft cofounder’s new 6,000-word essay, “The turbulent AI era is here. The choices we make now are critical,” reads like a man who has seen the projections and stopped sleeping well. His core warning: “AI will either be the greatest equalizer ever invented, or the worst source of injustice.”

Gates isn’t just hand-wringing. He’s proposing actual policy mechanisms — rare for a tech billionaire who usually operates through philanthropy rather than regulation. His most concrete idea: tax AI tokens and robots to make automation less financially attractive than human labor, and create a protected category of work he calls “Human Reserved.” That’s a striking admission from someone who built his fortune on software eating the world. He also wants an international AI governance body modeled loosely on nuclear and aviation agreements, though he admits he has no blueprint for what it would look like.

The timing matters. Gates has been conspicuously quiet on AI for the past couple years — a silence some attribute to the Epstein association fallout he’s still trying to put behind him. This essay signals he’s done watching from the sidelines. He’s vowing to raise AI equity with lawmakers every time he’s in Washington, and he promises more essays coming on specific solutions.

His labor pessimism is the throughline. “Many jobs will disappear forever,” he writes, and he doesn’t qualify that with the usual “but new ones will emerge” caveat. That’s a meaningful break from the standard tech industry talking point. Gates is essentially saying the transition will be brutal and we’re not remotely prepared. The question his essay leaves hanging: if the guy who helped build the modern computing era is this worried, what does he know that the rest of us don’t?