. >> so, michael pietsch, what do you do for a living? >> guest: i'm the ceo of the hachette book group which means i work with a lot of really talented publishers and editors, marketers, sales people, finance people. i mean, everything that's involved in running a modern publishing company that is involved in bringing books to all the readers in america and around the world. >> host: what makes up hachette? >> guest: hachette is a company that's made up of some publishers that have been around for a very long time. .. we have a children's book division and of christian division. we have nonfiction and audio versions of all of our books. perseus is a great group of imprints. >> what's the importance of having all of these? the wonderful thing about publishing is that it's often times done by people who have a