At first, it was confusing. 
 Some words used in this book took me a while to understand it. I was like, "What are Pods? Realms? Bliss? Unity? Smarteye? Aether? Scire? Etc.." I am so clueless about it that I almost give up reading this because I just don't get it. As I read along, I'm starting to love the world of Under the Never Sky as some parts became clearer to me. I really like the characters, the story and it's thrilling. That Aether storm is scary (view spoiler)[It's a tornado. Instead of blowing you away, it will burn/toast you. (hide spoiler)] and I'm really fascinated with the Smarteye and explore some Realms. I want a Smarteye! 
 I'm looking forward to read the next book to see what happens next with Aria & Perry. I definitely recommended this book to everyone. :)