Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quick, interesting read

Got this book based on a friend's recommendation. Read it this morning. It's one of those books whose ideas far exceed the quality of the writing. Lots of (slightly) hidden details to think about, though the "as you bike about" narrative is pretty annoying.Especially on the mail delivery and railroad line sections made me think. I remember my granddad talking about twice a day mail delivery, Sunday mail delivery, the fast passenger trains...