I don't know. I think I expected more from a Margaret Atwood book. Sorry. 
 (Okay, I couldn't resist the urge to elaborate. I hadn't read Oryx and Crake before this, but this world Margaret has painted is strongly different enough - excuse the phrasing - so that I don't need to read O&C to appreciate any subtle differences in both worlds. But halfway into the book, I realised that that was all she was doing - painting this world and making it become realer. There wasn't really much of a plot, but usually if the setting/atmosphere is important/compelling enough, it wouldn't be much of an issue, but I was rather bored throughout this book. I expected more, so that's probably why I rated this quite badly.) 
 [Edit: have read Oryx and Crake, then am now re-reading this and READING ORYX AND CRAKE BEFORE THIS HELPS A LOT. That's all I can say.]