On May 19, 2009, the paperback version of The Influence of Affluence--originally published as The Middle-Class Millionaire--was released in bookstores. The book underwent a title change in its shift from hardcover to paperback. In fact, the original title of the book was "The Influence of Affluence" but the publishers chose to change the title at the last minute. Well, one thing has lead to another and the publishers have changed their mind and decided to go back to the original title.
There's no accounting for genius.