CONCEPT
Preservative Powers of Print
Eisenstein's term for the redundancy that printed distribution created — knowledge rendered effectively indestructible for the first time in human history, because no single fire or act of neglect could destroy what existed in hundreds of copies across independent institutions.
Before print, knowledge was perpetually at risk. A text that existed in a single copy was one fire away from oblivion, and even texts in multiple copies were vulnerable because each copy was held in a specific physical location. The burning of the Library of Alexandria — whether actual or mythic — became the emblem of this fragility. The printing press introduced what Eisenstein called the preservative powers of print: when a text could be printed in hundreds of copies and distributed across dozens of cities, no single event could destroy it. A fire in one library did not matter if fifty other libraries held copies. Distribution across independent institutions created a redundancy that made knowledge, for the first time, effectively indestructible. This preservation was the structural precondition for cumulative inquiry — the ability of each generation to build on the previous one's work with confidence that the foundations would not disappear.
