Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is one of the worst economics textbooks ever

I have to say that this is one of the worst economics textbooks that I have ever read. The font is tiny and reading it strains my eyes. The book is not written in a clear style at all. In fact, I often have to reread paragraphs just to understand what's going on. Sometimes, the authors go into needlessly long and complicated tangents to explain simple concepts. Someone needs to seriously condense and clarify the material in this textbook or else it'll become the bane of every college economics student's existence.