Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a stuffy sloppy book

The authors explanations on the concept of opportunity cost of capital of an investment, a central concept of standard finance, are so sloppy and confusing, starting from the first pages of their book, that one wonders if they clearly understand themselves the simple probabilistic model underlying standard finance. The fundamental fact of finance, which states that between two securities with the same expected future value investors will pay more for that with lesser variability, is barely mentioned after about 200 pages in the legend to a figure. It is presented as inescapably logical, which it is not. In short this book gives a long and somewhat stuffy presentation of conventional finance but will be very difficult to a reader that really wants to understand finance.