The cliffhanger is so good, I can'i wait till I can get my hands on The Ask and the Answer! 
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 I really liked that Ness used phonetical speech, I think it added to the feeling of the book; the sense of the characters actually being new settlers of an uninhabited world, and of the characters; how it separates them from each other. 
 I like that young Todd Hewitt is written like an "actual" person and not in a too fictional way where flaws and strenghts are sometimes overly enhanced and flaws are often just strenghts pushed too far. 
 The one thing I might have had an issue with, and this was something I was only reminded of whenever Todd's age was mentioned, is just how much more adult he seemed than he perhaps would've been, even considering the world in which he was brought up in. In all it's a very minor thing and something I was only made aware of when his (and also Mr. Prentiss Jr's) age was mentioned.