Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "Advanced" development by a non-developer

It is disturbing how many game development books are written to teach professional game development, but are written by people who have never worked on a professional game. This makes me wonder if the author is presenting real information, or if it is simply his own view of what he thinks game development may be like. In any case, the "advanced" tag is misplaced.