Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ethics is a two-way street

Prof Mihesuah has a lot to say about other people's ethics but sees fit to write a 5-star review of her own book using the space provided for reader reviews, even though there is a separate area provided for authors to make their own comments. As a published author myself, I wouldn't dream of doing this. It's completely unethical and undermines any valid arguments she puts forward in her book.