Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Exactly who did the author have in mind?

The best puzzle books start with problems that are interesting and non trivial, and offer unexpected solutions. They appeal to a crowd with different levels of education and offer a new idea or two to all. They will lead an unsuspecting layman to a new beautiful mathematical subject, and treat a pro with a lighthearted yet technically sound look at the concepts he is already familiar with."Dueling idiots" is none of that. To read it you must be more than familiar with probability theory, and at ease with going through rather tedious calculations and using mathlab. Yet all a sophisticated reader finds here is technical sloppiness and absence of fresh ideas.I am giving it two stars rather than one because it could provide some probability theory buff with a nice set of "real life" applications -- good as an auxiliary text book for an undergraduate probability class e.g. Apart from that, you will find a better puzzle book almost anywhere you look.