Elon Musk, chief executive officer of Tesla Inc., during a fireside discussion on artificial intelligence risks with Rishi Sunak, UK prime minister, in London, UK, on Thursday, Nov. 2, 2023. Sunak convened this week’s AI summit in an effort to position the UK at the forefront of global efforts to stave off the risks presented by the rapidly-advancing technology, which in the prime minister’s own words, could extend as far as human extinction. Photographer: Tolga Akmen/EPA/Bloomberg