Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Interesting and fun

This book is a fun and easy read that stays with the reader. That's a nice and rare combination of ingredients. Levitt applies clear-eyed economic theory to social situations--for example, how much difference does good parenting make--with surprising results. He challenges us to ask meaningful questions and to see things not only as we wish they were, but as they really are. As Levitt freely admits, the book is a hodgepodge of different topics without a clear theme. But that's part of what makes it easy to pick up and set down without getting lost.