Instruct: Classify Amazon reviews into positive or negative sentiment
Query: How not to write a book

I bought this book to write the FRM exam. It is the worst possible written book that I have ever seen. Even the topics that I have a very good knowledge of (e.g. Duration, Convexity etc.) are written in such a disjointed fashion that I could not recognise them. The author uses symbols without describing them, the passages have no relevance to the examples which in turn cannot be connected to the solutions. It was a great disappointment. I wonder if anybody at GARP ever reviewed it before recommending it as a text for the FRM exam.