Instruct: Classify a given Amazon review as either positive or negative.
Query: A scientific approach to a religious riddle: evil.

Anyone interested in grappling with the all the hate in this world (and in their own hearts) should read this book. Watson breaks down human aggression into something our genes command us to do to keep themselves alive -- who's really in control here? Only by understanding our genetic enslavement, Watson argues, will we ever be able to rise above it. The book is wonderfully free of new age b.s and religious moralizing; it casts a bright light on a dark and slimy subject. The end result for the reader (at least this one) is a deep understanding of what makes our dark hearts tick.