Instruct: Classify a given review into positive or negative sentiment.
Query: Dissapointing when compared to Joel's previous books

The articles in this book are on the whole, not that interesting. There is no logical flow between subjects, or even style of resulting.Joel's contributions are minimal (a footnote here and there to expand an acronym or link to a webpage). The usual wit has been lost and his comments actually have an air of arrogance.