This is a hard book to review because I did enjoy reading it (and in fact, basically devoured the whole thing in about 3 days). The world building is great, the characters generally well-drawn, and the basic plotline compelling. I just couldn't really wrap my mind around the premise of the dystopia and found it overall too insular (what about the rest of the world? Is Chicago the only one divided into factions? What makes the Erudite so desperate to grab power? etc.) I'm assuming some of these questions will be resolved in the next 2 books so I'm willing to revise this review after I've read those. As a standalone, it's not as good as you-know-what (Tris is no Katniss). But hey, at least there is no love triangle (yet?)!