Instruct: Classify a given Amazon review as either positive or negative.
Query: Good ideas, bad book

Per Bak's ideas (and ideas of others that are occasionally presented without quoting the original sources) are remarkably interesting, but the book itself seems to be a product of an uncontrolled avalanche in author's brain. Too low rigor and signal-to-noise to be interesting scientifically, too poorly written to be read as fiction - sorry, two stars. A 10-page summary could have done much better.