I've never read any other books by Paul Theroux, who seems to get compared to Updike a lot, but I've enjoyed his longform journalism and he is as good at writing dystopian, near-future sci-fi as anyone I've run across. The book captures a society ruled by xenophobia perfectly, as well as the viciousness of people to whom mob mentality is a sort of hobby. The small cultural/sartorial/technological details of the book are mostly pretty good, with ideas that are often believable (e.g., women go to brothels where the masked sperm donors have sex with them, and people can sort of accept this because it's done for the sake of having super-smart children). The contrasts between the isolated, tiered cities and the stone-age countryside is done skillfully and unnervingly, and the sense of dread the city dwellers seem to have when out of their cities is conveyed with genuine tension. Life among the "aliens" in the O-Zone as a flipside shows people that are as complex and multifaceted as anyone, not simply played off as noble savages or outlaws. The characters, from a murderous posse member, to a stern tribal leader, to a precocious social misfit, to a wealthy business and the teenage "alien" whom he becomes infatuated with and abducts,are all believable; Theroux doesn't show us people at their best, but rather driven by familiar and often conflicting urges and traits. Dialogue is fairly bizarre but works within the book's social context and is handled well, with offhand remarks and observations often being intensely insightful. A very good book if you don't mind it being a total freakin' downer and have any interest in near-future sci-fi.