other “paper tools,” 3 such as cardboard boxes, file folders, andenvelopes—the book demonstrates that Fontane produced his prosefi ction, feuilleton essays, and other contributions to the press in acreative process that was the exact opposite of his self- staging as theinspired mouthpiece of the muses. Deliberate at every step, heassembled his texts from pre- mediated sources with scissors and glue,in an extraordinarily inorganic, radically intertextual, and completelyconscious manner.

This coinage goes back to Ursula Klein and describes writing media that have anepistemic impact. See her essay “Paper Tools in Experimental Cultures: TheCase of Berzelian Formulas,” Studies in the History and Philosophy of Science 32( 2001 ): 265–312.

In §§ 4–5, I examine the socio-evolutionary circumstances under which a closed combinatory, such as the one triggered by the Llullian art, was replaced by an open-ended combinatory, such as the one triggered by a card index based on removable entries. In early modernity, improvement in abstraction compelled scholars to abandon the idea that the order of knowledge should mirror the order of nature. This development also implied giving up the use of space as a type of externalization and as the main rule for checking consis-tency.

Media theorist Markus Krajewski has devoted a book specifically to the paper machinery of cards and catalogs. He traces the origins of this machinery back to sixteenth-century attempts at indexing books, and through the twists and turns of library technology in Europe and the U.S. over the following centuries.