The first thing that you need to know about Feedback is that it is a sequel. And its not one that explains things in the beginning. It picks up right where the other book ended, and keeps going. Even having already read the other book, I found myself getting a little lost. However, keeping this in mind, I thought this was a very good book. It had the same feel and pace of the first book, so if you enjoyed Variant, then you will enjoy this book.