Children's books are part of the fabric of parenthood. We read them. Then we read them again. We come to know them as well as our kids' stuffed animals (and better than their friends). But what makes one of these deceptively simple tomes tick? Fatherly Podcast host Joshua David Stein, a children's book author himself, and co-host Postell Pringle speak to editor Kate Harrison of Dial Books for Young Readers about what makes a good idea great and how a great idea can evolve into a class. Also, Joshua sings.