Did this feel particularly original? Not really. But I still liked Roth's voice. It reminded me of a whole lotta series that had a spark for me but ultimate couldn't figure it all out (no I'm not gonna name names) and this has it more figured out so far. Divergent's success on some level was that it felt familiar while also creating a specific new enough world that was easily accessible for readers. I think this largely does the same. And the chemistry between her characters remains rocking. 
 And, the good news is, I don't see any way this duology can end up with us discussing genetics at O'Hare!