"What is the meaning of life? 2070-71. Nearly six decades after Step Day, a new society continues to evolve in the Long Earth. Now, a message has been received: “Join us.” The Next-the hyper-intelligent post-humans-realize that the missive contains instructions for kick-starting the development of an immense artificial intelligence known as The Machine. But to build this computer the size of an Earth continent, they must obtain help from the...