For me, the book just really skimmed the surface when it came to the thoughts of the upper class, and really spent too much time on a select sample of the middle and lower class. If you are going to write a book about why each class matters and the lifestyles of the varying levels of class, then you must include a balanced portrayal for each. That is where this book fell short for me. Even the surveys were so contradictory and too vague to get a clear picture of what class means to each individual. Frankly, it just seemed class cannot be determined scientifically, but rather individually. Wealthy to one person is not necessarily the same for another. The stories of those selected where interesting, but predictable and nothing out of the ordinary. I think NYT needs to revisit this heavy topic after the recession has ended. The class system today has changed so dramatically that the facts presented in the book are really now obsolete.