Instruct: Classify Amazon reviews into positive or negative sentiment
Query: If I could give it zero stars I would.

If I wanted a history lesson of telecommunications, I would have bought a book on it. I thought I would be learning about networks, which you eventually do after 6 or so chapters of worthless history. I could care less how the telegraph impacted the modem. To the authors of this book...keep the history lesson and stick to the task at hand writing and introductory book on networks. If you have any knowledge about networks, I wouldn't even waste my money. On a positive note this book is a tremendous cure for insomnia.