It seems to me business books are caught in a vicious circle: people don't bother reading them from cover to cover, so the writers duplicate all essential information endlessly, which leads to people not bothering to read the whole thing since it's mostly duplication, which leads to writers duplicating even more information, and so on.

This famous book is a victim of that war: a 20-page idea bloated to 280 pages. Chances are if you've heard of this book, you already know most of the contents. Some good insights but they suffer from the constant repetition.