Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent book on science history but last small section was somewhat dated

Very good explanation, for the dilettante, of left hand versus right hand organic molecules and the history of how science figured it out. Good explanation of several other science topics and their history as well. However, his discussion of the population bomb tended to stray into the pop culture science of the 1970 era so it was highly dated. This book certainly changed my mind from thinking that Asimov was just a science fiction writer. In fact I am leaning towards thinking his non-fiction books were better than his fiction. My next purchase of Amazon used books is going to be Asimov's book on Shakespeare.