The world of finance has a dark side, but that's only half the story

You could say that the field of finance has an image problem, with both fictional and real-life figures projecting greed and other less-than-likeable attributes. That’s why Mihir Desai has written a book, "The Wisdom of Finance," to balance the picture and appeal to those in the field to get back to the core ideas. Economics correspondent Paul Solman reports.