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

I ordered the book because I'm interested classical and analytical mechanics for years, and the book had 14 reviews - all with five stars. It supposed to be modern and innovative; I could not wait to get it in my hands. What a great disappointment! Out of 262 pages 70 is not even on the subject; they are devoted to linear algebra (vectors and matrices). Out of modern Analytical Dynamics it essentially covers only one subject: Lagrange equations. The partial list of absolutely essential topics missing from the book includes: Hamiltonian function, Hamilton equations, Poisson brackets, canonical transformations, variational principle, Noether theorem, Hamilton-Jacobi equation!!! As a trained physicist, I completely failed to understand what constitutes the advertized novelty of the book. It is also deeply puzzling how such an incomplete text could possibly receive so many highest reviews.