LONDON –- At the Saudi-U.S. Investment Forum in November, Elon Musk sketched a future in which AI and humanoid robots will do almost all the work. Money, he suggested, will become almost irrelevant. Jobs will be “optional,” more like hobbies such as gardening. Machines will have ended poverty, because everyone will receive a “universal high income” from the state. Musk is hardly the only tech titan with this vision of the future. Demis Hassabis of Google DeepMind looks forward to an era of “radical abundance” in which AI will deliver extraordinary productivity and prosperity, with the gains all “fairly” distributed. Mustafa Suleyman of Microsoft AI argues for a “universal basic provision” that would treat access to powerful AI systems and digital services almost as an entitlement. And Sam Altman of OpenAI has proposed an “American Equity Fund” that would tax large companies and private land at 2.5 percent per year to pay every U.S. adult an annual dividend. Put simply, the leading architects of AI are open about the fact that they are creating systems whose su