Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Absolutely great

"Purity and Danger" is one of the best anthropology books...PERIOD. You will never look at taboos/pollution/dirt the same way again, after you read this book. Well, let me rephrase that: if this book doesn't give you a new insight into these matters, it is because you have already been exposed to Douglas's ideas and were not aware of it. I think that this book is essential for anyone in the social sciences. It is a great read, and is very powerful. Social science at its best.