2.5 starsI love the idea of this book. Who wouldn't want to see the different possibilities of their lives? However, it was a little too much work for me to read. I struggled with physics in school, even with my good friend's mom as the teacher. And since the majority of the book talks about string theory and the like, I felt more like I was reading a lecture than a book. Ruby is a good, smart character. She gets stronger as she travels through the universities and is definitely more level headed than I would have been. Overall, it was a quick read. I just wish there would have been more of a human element to it, instead of all the equations.**Thanks to NetGalley for providing the arc in exchange for an honest review**