And several times, said Austerlitz, birds which had lost their way in the library forest flew into the mirror images of the trees in the reading room windows, struck the glass with a dull thud, and fell lifeless to the ground. Sitting at my place in the reading room, said Austerlitz, I thought at length about the way in which such unforeseen accidents, the fall of a single creature to its death when diverted from its natural path, or the recurrent symptoms of paralysis affecting the electronic data retrieval system, relate to the Cartesian overall plan of the Bibliothèque Nationale, and I came to the conclusion that in any project we design and develop, the size and degree of complexity of the information and control systems inscribed in it are the crucial factors, so that the all-embracing and absolute perfection of the concept can in practice coincide, indeed ultimately must coincide, with its chronic dysfunction and constitutional instability. (Austerlitz)