Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Much Flash, Little Substance

My first problem with this "biography" is that the author spends time relating the plots of some of Dick's novels, including their endings. This is annoying, as I have not read all of Dick's works. Therefore, I had to skip the parts where the synopses were inserted. Secondly, the author states that he read too many books to mention. That's funny, as most biographers have no problem citing their sources. We could at least have had a bibliography here. Third, the author injects a LOT of speculation about Dick's state of mind, which is interesting but not in any way reliable as biographical material. I did, though, enjoy the philosophical explanations of some of Dick's theories, especially the discussion of The Man in the High Castle, Dick's masterwork. Read this one with a grain of salt.