Free will is only an illusion.
It's a scary concept to think about, but with a little reflection, it's not. This book isn't trying to say that the world doesn't exist and its just a figment of your mind. But it just makes you think about the concepts of 'free will' and how many things get attributed to this that aren't even free will. If it was never free will to start with, then how can we even miss not having it?
Nothing like a little light reading before I go to sleep.