Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too many subjects with too shallow a treatment

When I purchased this book, I thought that the idea of a "time viewer" was very interesting, and that a novel based on this idea should be captivating. After having read the book, I am still convinced it is a very interesting idea, but not as treated here! First, I don't see the point of mixing the "time viewer" story with other developments(the Wormwood, the head implants) that have nothing to do with it. Second, the book looks more like a first draft of a script rather than a book. Characters are shallow at best. There is no real story, only a minimalist plot designed to cover as many consequences of the "distance/time viewer" as possible. I am wondering whether the two authors have even tried to put their ideas together and to select the best among them, rather than each adding his first thoughts on this novel. Don't waste your time and money on this superficial SF script!