Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent overview of cancer's genetic mechanisms.

This a wonderful introduction to how cancer begins. It presents a fascinating history of the research involved in uncovering the underlying causes of cancer as well as acquainting the reader with the genetic underpinnings. Weinberg assumes no prior knowledge of cell biology or genetics and proceeds to skillfully lead the reader into some rather deep waters. By the end of the book the reader will have a very good grasp of what cancer is all about and will have gained an appreciation for the wonderous complexity of the cell's inner workings. I highly recommend this book to anyone blessed with a sense of curiosity. You won't be disappointed.