 A final word from our first witness, strategic futurist Mark van Rijmenen. You're not going to stop the development of AI. So we'll have to find novel ways. And if there's not enough sustainable energy, then I'm afraid we'll have to resort to other means. But I'm not worried that there won't be enough energy. There will be because it's too important to stop this if we ever could. The inquiry from the BBC World Service was presented by David Baker. It was produced by Louise Clark.