Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Pretty worthless

I'm afraid this book is pretty useless as far as factual information goes. Few texts are properly cited and John Paul I is quoted as saying all sorts of things--ie condemning Moses--which it's pretty hard to credit. Many of his public speeches are available and they don't support the contentions made. Both David Yallop's and John Cornwell's books cover the same material and are vastly better; though they write from very different perspectives.