Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What about overpopulation?

Thin, vapid pop psychology that does not even mention such concerns as global overpopulation and the ensuing ecological collapse of our planet. The decision whether or not to have a child is the biggest decision most of us will ever make, and it requires the thoughtful person to consider factors other than their own small life. This book won't help you with the bigger issues. Very superficial. Check out Bill McKibben's Maybe One or the Society for Voluntary Human Extinction for more provocative, subversive food for thought.