Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No continuity of thought

This is by far the worst book on mechanics I have seen. There is no attempt to form any conceptual basis about the actual physics of what's going on. The first few chapters on basic Newtonian physics were interesting (mainly because I knew it all), but later chapters were impossible to learn from. Landau&Lifshiz offers a much clearer description of Lagrange-Hamilton mechanics and makes the variational calculus needed for L&H simpler. I wish someone would have told me that while I was taking the course.