I don't really have any strong opinions about this book. It was a solid book, especially if you knew little about dopamine beforehand. I do think, however, it under-delivered from what the title was describing. I was expecting more from the title as it talks about the fate of the human race. I do think dopamine does affect that, but it isn't the one thing that does. Overall, solid read if you don't know too much about dopamine and want to learn a little bit more about it.