In this task, you are given books product reviews in English language. The goal is to classify the review as "POS" if the overall sentiment of the review is positive or as "NEG" if the overall sentiment of the review is negative.

Plate Tectonics as told by those that assembled the theory . This is a highly informative account of both the ideas that led to the development of Plate Tectonic theory and the concepts of how the earth works. The book is engaging to read and is understandable to an audience at the level of Scientific American. I am using it as a required text in my course at Columbia University titled &quot;Plate-tectonic theory and its geological corollaries&quot;. For those fascinated in how the human mind puts observations together to build ideas and then test them, this book is first rate. Each chapter is crafted by a different researcher describing his or her contribution to the over all theory. The reader encounters brilliant and original ideas discarded by peer review, scientists peeping over each other's shoulder, the rush to the goal line to publish first, competition for access to key data sets, a last minute conversion from the static earth perspective, and the thrill of exploration at sea. The authors presents a wonderful history in Chapter 1 of the intellectual passage from the first inkling of continental drift in the 16th century to the breakthrough in 1966-1968 of the full-blown theory of rigid lithosphere paving stones and narrow plate boundaries
POS

His Dark Materials Trilogy . I have had these books on my shelf for a number of years, having never gotten around to them.  They should have stayed on the shelf, as I now know.      I read a lot of sci-fi and fantasy, so I recognized many of the tropes that Pullman tries to pull off.  I must say that Holly Lisle pulls off the multiverse much better than he does, and that's not saying a whole lot.    Like most people here, I found myself drawn in by the first book.  That one was well written, if a bit heavy handed in how good Lyra was, how brave she was, how she could do anything even if it was previously impossible for anyone else to do - like break her father out of his Svalbard prison.  However, the books declined in quality from the first page of the second book.  Will takes it much too easily when he finds that he has committed his first murder, especially for a boy of 12.  As a reader, I am willing to suspend belief quite a bit, but this particular plot point snapped that thread for me.  Once that was lost, it was extremely difficult for me to engage myself with the text once again.    As far as the ending goes, what a disappointment.  It seems as if the third book was trying to tell three vastly different stories.  Frankly, if Pullman had created a novel entirely about Mary Malone slipping into the world that she did and studying it in a scientific capacity with no way to return, that would have kept my interest much more than his rabid defamation of Christianity.  Also, Pullman fails to deliver on the cohesion of comparing Mary to the serpent, Lyra to Eve, and Will to Adam.  There was no offering there by Mary of something to tempt Lyra with as happened in the Garden of Eden.  Without this crucial component, there is no way that Lyra can be Eve reincarnate.     The propaganda that Pullman purports as truth would be all right if he was claiming it as his own, and that if others believed it, that would be okay.  However, he very cleverly lulls the uncareful reader into believing that what he is saying is a universal truth.  I had no idea that atheism was so nihilistic, yet that is the view I came away with when I finished this trilogy.     I would never recommend these books to anyone.  Rather, I would steer them towards better fantasy novels - like Rowling, Tolkein, Robin McKinley, Patricia McKillip, and Ursula K le Guin
NEG

NO . sorry, i just thought the book was boring and worst of all, its a good story with alot of food for thought, but it was just written so poorly that it was ruined

NEG