I was thinking 3.5 stars... or even 3.75. 
 My bookshop boss LOVED Hugh Howey's Wool so I thought I'd read it and I guess I didn't until a year after... in other words, slowly, now. I then met Hugh at Supanova in Melbourne in April and had him sign both Wool and Shift. He was a nice bloke. So I thought I'd be nice and read Wool to be nice in return. 
 I liked Juliette's characterisation. She has all those qualities you want in a protagonist: strong, defiant, empathetic, sympathetic, fearless. Though I don't quite feel I got to know any of the other characters to the extent that we got to know Juliette. After all, the back of the book says, "This is Jules' story" - carelessly using the apostrophe wrongly. Should be "Jules's story" as there's only one Jules. But anyway haha! Hugh knew how to use his apostrophes correctly and that's what matters - Hugh is a fantastic writer and I'm looking forward to reading the next two book Shift (the sort of prequel) and Dust which just was released.