This book explains a part of quantum physics to you by explaining it to the main character and then she's like, "I don't get it" and so they explain it a different way, and then throughout the book they explain it AGAIN at least 3-4 more times. It was irritating having to read that over and over. I also didn't like the ending and the story itself just wasn't for me. It's all an interesting concept and obviously a lot of people liked it with a average of 4 stars. But for me it's a 2.