A false sense of security persists surrounding digitized documents: because an infinite number of identical copies can be made of any original, most of us believe that our electronic files have an indefinite shelf life and unlimited retrieval opportunities. In fact, preserving the world’s online content is an increasing concern, particularly as file formats (and the hardware and software used to run them) become scarce, inaccessible, or antiquated, technologies evolve, and data decays. Without constant maintenance and management, most digital information will be lost in just a few decades. Our modern records are far from permanent.

longnow.org/...