We see everything from the narrator's point of view, so exposition about the world is limited to what impinges directly on him and the story he's telling. Considering how old the world is, we learn very little about its history, which I think is a good thing.
Neal StephensonHow could your cover be blown in Canada? Why even bother going dark there? How could you tell?
Neal StephensonMost countries are static, all they need to do is keep having babies. But America's like this big old clanking smoking machine that just lumbers across the landscape scooping up and eating everything in sight.
Neal StephensonOne of the problems, hanging out with me, is that I can turn any topic into a toxic horror story. I've lost two girlfriends and a job by reading an ingredients label out loud, with annotations, at the wrong time.
Neal Stephenson