Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Very insightful yet flawed.

Dunne is onto something very important. The first half of the book is easy to follow and very insightful. It is an important work that, in my opinion, successfully demonstrates the precognotive nature of some dreams. I am perhaps more easily convinced than others as I too have had similar experiences. However, Dunne goes beyond proving the existance of such dreams and attempts to explain how and why they happen. The infinite regress argument seems to be flawed. He claims it to be proof of God's existance. I do not feel that he has successfully proven this theory about the how and why of time. For a very good analysis of Dunne's theory, see "Man and Time" by J.B. Priestly. Regardless, "An Experiment with Time" is a very important book that attempts to take an objective view on a very subjective subject.