Instruct: Classify the given review as either positive or negative.
Query: boring, shallow

I am amazed that so many people liked this boring, clunky, and adolescent tale. The time travel device fails on many levels, and it is never clear what telling the story in this way adds. The characters do not develop as believable people; they don't grow in psychological depth. The detailed descriptions of the routines of every day--do we need to know so much about every meal they eat or the clothes they put on?--are boring and easily skipped. As the characters never seem real, the end is not touching but predictable. I actually felt relieved that the book was finally over.