Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hugely disappointing

I have loved Simmons's other work, but this was a boring and pointless slog, at least to me. Various story lines, none of which were emotionally compelling, dragged together to a non-conclusion so that it can be spun out into a series. Some potentially interesting premises, but disappointingly executed, and I resented reading the entire book to find that it is nothing but the setup to a future series.