Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ruthless and scary

Great for tips and forms that help you interview more effectively, if you can find candidates who don't mind spending a few hours in a single interview. I found the author's tone harsh and condescending. If you want permission to be a ruthless manager, you'll love this book. If you are a "kinder gentler" boss that cheers on employees and encourages greatness rather than a staunch disciplinarian you may find this book less than useful overall.