Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bova used to be good

I used to really enjoy Ben Bova's books. Examples such as "Colony" and "Millennium" spring to mind. Unfortunately his more recent works (including this one) tend to read like poorly written soap operas. The science is still good though in this world where hard science fiction seems to be disappearing in favour of fantasy. This will probably keep me buying his novels but I do it with more trepidation than before.