"In fact, the classified universe, as it is sometimes called, is certainly not smaller and very probably is much larger than this unclassified one. Noone has any very good idea how many classified documents there are." Galison, Peter. "Removing knowledge." Critical Inquiry 31.1 (2004): 229-243. http://www.worldcat.org/oclc/2241746 Getting the PDF-File directly: http://www.fas.harvard.edu/~hsdept/bios/docs/Removing%20Knowledge.pdf --> longlink.com Source: https://www.youtube.com/watch?v=DDUOHlVYTXo
