EST is Cory Doctorow’s second novel, and as with Magic Kingdom, the setting again is a world slightly more advanced than our own, but not unimaginable. The twist this time is that tribes exist throughout the world not based on race or religion, but instead on common way of life of a particular time zone, regardless of where the members actually live. While I find this an intriguing (and plausible) premise, the major effect is messing up sleep schedules. Thus, a considerable amount of time is explaining tribal life with little impact on the plot. What’s left of EST is sort of a love story, corporate sabatoge, and a debate of happiness versus inteligence. It was enjoyable enough to read, but I had higher hopes for this book.