Instruct: Classify the given review into positive or negative sentiment.
Query: Waste of time

The book is written in a rather condescending tone that assumes that the reader has a grade 2 reading level and a total lack of short-term memory (sentences are repeated pages apart). Facts of total irrelevance are thrown at the reader. There are multiple mistakes when it comes to detail. The author must have been paid per word -- the redundance cannot be explained otherwise. It's impossible to actually learn anything and if you do, chances are it's wrong. Theories are presented as fact. In one passage a quote from a scientific article relating to fleas' digestive tract appears -- it's completely out of context as it's implications on the spread of an epidemic are left to one's imagination (if there are any). It's all filler with no substance.