This IS an important contribution to literary theory. The points that Lakoff and Turner make are very good, very logical, and will make you go "Of course! Why didn't I think of that?" It will not only change the way you read poetry, but will impact the way you watch t.v., listen to people speak, read the newspaper - any endeavor involving language. Why the low rating, then? Lakoff and Turner are structuralists, and they repeat everything over and over again, breaking things down to their minute building blocks. They made a very convincing argument in the first chapter, I thought, and didn't need to keep going the way they did. The third chapter, in which they apply their theory to a William Carlos Williams poem is also very good. Those two chapters would have sufficed. Again, an important book, but rather boring at times.