Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Not a service but cause of confusion
Review: Here is a useless book in this field that can cause much confusion in the minds of students. The book seems to be jumping around all over the place and all those hard to understand concepts can very well be explained in simpler terms with examples as we have done in our outside the book discussions. Better grab some other books and don't waste your money on this book.
