I'm having a hard time rating this book. I liked it, didn't love it. 
 Many of the previous reviews are correct. This book is very transitionary. There are no big action scenes, but I don't think that was the point of this book. It was meant to be a bridge between who Cassia and Ky were in Matched to who they will be in the third installment. I found their journey through the carving to be interesting, though I'm not sure whether or not it was needed. I can't decide. 
 I think I would have liked this better if we'd gotten...more of the romance. So much of this book focused on feelings of love and longing, and while we heard about it in Ky and Cassia's thoughts, we never really *saw* it. The author faded to black after every declaration of love, after simply saying "we kissed". I didn't *feel* that kiss. That's the thing with, especially, present tense first person. That tense and pov is used for the purpose of making everything feel immediate and urgent. But when you cut off before anything really develops, it leaves the reader with their breath held and no relief in sight. Some people may enjoy that, but I like to let the breath out and feel the satisfaction after a while. 
 All in all, I still enjoyed this. The POV's were quite similar, but I did notice subtle differences in tone. Ky was more depressed sounding, more angsty and afraid. Cassia was much more naive and a follower. Those things did come through in the narrative for me. Personally, I preferred reading from Ky's. He felt more real, less robotic to me. Cassia is kind of boring, to be honest. 
 I'll be back to read the next. Ms. Condie has hooked me enough in her world to make me want to know what happens.