Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Disappointed at this forty-year-old novel

I grew up in the 70's and thought this book would shed some light on what was really happening in the 1970s. If this book answers that question, it must have been a boring decade. The only thing that saves it (for me) is Updike's use of the English language. He's still one of the best American writers.