Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Confusing book

Math and Physics majorThis is a good book if you are solid in set theory. The prerequisites do not emphasized set theory enough. It gives a brief overview in the begining but not extensive enough.Also, although I can accept theorems written in set theory, even the examples are in set theory. In fact, alot of examples are really just corollaries. I take math to apply to physics. There are very few practical examples that apply to the real world.Also, notation is horrendous. Hubbard tends to make up the notation as he goes along. This is going to make it very confusing in later classes.Needless to say, there are careless typos.This is not a well written pratical textbook.