There are many alternate futures. But what if there were also ... alternate pasts? That's the premise of William Gibson's latest novel, Agency. Gibson is the pioneering science fiction writer who coined the word "cyberspace" and whose 1984 debut novel, The Neuromancer, is the book that inspired The Matrix. In, Agency, the second novel in Gibson's Peripheral trilogy, we've arrived back in 2017, at a fork of the past, called a "stub," in which Trump was never elected and Brexit never happened. In this universe, an app-whisperer named Verity Jane is testing a beta super-AI named Eunice, and crisis communication expert named Wilf Netherton has teamed up with a cop named Ainsley Lowbeer to try to avert nuclear war. In other words, it's a novel that looks unflinchingly at the importance of choice and the complex decision trees that could precipitate, or prevent, the end of the world as we know it. Mother Jones Editor-in-Chief Clara Jeffery sat down for a conversation with William Gibson at Public Works in San Francisco last January to talk about his new book. They discuss how politics has influenced his writing, how he uses his imagination to predict future realities, and how the real-life climate crisis intersects with his fictional imaginings of the end times.