This has nothing to do with realism (even if it explains also realism). A completely real world can be constructed, in which asses fly and princesses are restored to life by a kiss, but that world, purely possible and unrealistic, must exist according to structures defined at the outset (we have to know whether it is a world where a princess can be restored to life only by the kiss of a prince, or also by that of a witch, and whether the princess's kiss tranforms only frogs into princes or also, for example, armadillos).

Eco has also written academic texts children's books and many essays. He is best known for his groundbreaking 1980 novel Il nome della rosa (The Name of the Rose) an intellectual mystery combining semiotics in fiction biblical analysis medieval studies and literary theory. Umberto Eco Knight Grand Cross (Italian pronunciation: [umˈbɛrto ˈɛko]; born 5 January 1932) is an Italian semiotician essayist philosopher literary critic and novelist.

His most recent novel Il cimitero di Praga (The Prague Cemetery) released in 2010 was a best-seller. Umberto Eco Knight Grand Cross (Italian pronunciation: [umˈbɛrto ˈɛko]; born 5 January 1932) is an Italian semiotician essayist philosopher literary critic and novelist. He is founder of the Dipartimento di Comunicazione at the University of the Republic of San Marino President of the Scuola Superiore di Studi Umanistici University of Bologna member of the Accademia dei Lincei (since November 2010) and an Honorary Fellow of Kellogg College University of Oxford.