Jeff Rothenberg of RAND visited Friday to discuss preservation and emulation of digital information.
A first interesting thought: what is a "digital original?" There will be the original and then the surrogate, which may receive transliteration to be current to the context of the reader ... a surrogate copy. New surrogates would be created from the original, and the original preserves trust in the surrogates.
Any digital object is an executable file, designed to be interpreted. An important point was that "born digital" documents are those which are equivalent to text typed on a page, where "inherently digital" objects need to be rendered by a computer. The vast bulk of digital information is
not inherently digital, but we are generating more inherently digital information than we expected. However, a born-digital document may receive value-added in the form of comments, links, labels, annotations; and these are "inherently digital" and are value that needs preservation.
Inherently digital information will need emulation to interpret it over time. Emulation, migration, formalization steps.
Key take-away: we know very well how to preserve paper documents; digitization priority is therefore
not driven by preservation. Digitization is driven by access, re-use, the ability for multiple users to create inherently digital works of value.
Jeff Rothnberg "Avoiding Technological Quicksand" ...
http://www.clir.org/PUBS/reports/rothenberg/contents.html