I've read many a book (recently, "The Unbanking of America," which was recommended by another commenter on HN, or "Veils of Distortion") where the author did no

I've read many a book (recently, "The Unbanking of America," which was recommended by another commenter on HN, or "Veils of Distortion") where the author did not have nearly enough material for a book, but perhaps had enough material for a New Yorker article. So think of the New Yorker as saving the world from material that would have been even longer if it were in a book.