Attempts to discover exactly how Terry Pratchett manages to get away with violating the rules of the fantasy tradition laid out in Tolkien’s “On Fairy-stories.” Pratchett consistently revels in the absurdity of Discworld as a concept, breaks the fourth wall, and disrupts Tolkien’s proviso against satirizing magic itself; and yet the Discworld sails on, imperturbable. Pratchett’s concept of narrative imperative is discussed as one of the keys to the success of his invented world.
"Toying with Fantasy: The Postmodern Playground of Terry Pratchett's Discworld Novels,"
Mythlore: A Journal of J.R.R. Tolkien, C.S. Lewis, Charles Williams, and Mythopoeic Literature: Vol. 33
, Article 8.
Available at: http://dc.swosu.edu/mythlore/vol33/iss1/8