Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Is this a joke?

I honestly hope the other reviewers really did become as fulfilled from reading this as they say. I was given it because I have a background in Physics and an interest in psychology and religions. Unlike most information in these areas, this book offers no substantiation for anything. It's a little bit watching a cartoon. It's somewhat entertaining for about five minutes, but you know it's not real. Most people will find it really hard to take the book seriously when there's no evidence for anything the author says.