Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a mediocre overview of a fascinating subject

The illustrations are spectacular in Special Cases, and many of the anecdotes are vividly written. But the author also omits much of the subject matter's historical and scientific context, leaving the "special cases" looking more like simple freaks. As well, this book is poorly organized and poorly edited, so that by the end I was completely frustrated with Ms. Purcell.