Information Technology Reference
In-Depth Information
Fig. 9.1 Arecibo message as 1's and 0's ( left ) and as pixels - both black and white ( centre )and
with shading added ( right )
9.1 Re-Use of Digital Objects - Interoperability and Preservation
One of the interesting, and indeed useful benefits of following OAIS and judging
digital preservation in terms of usability and understandability is that resources
which are needed for preservation also produce immediate benefits in terms of
wider, contemporary, use of the digital objects.
We justify this claim by noting that if one is familiar with a particular piece
of digitally encoded information then, apart from keeping the bits, one needs
nothing else. Representation Information - beyond that held in one's mind - is
needed only where information is unfamiliar in some sense. This unfamiliarity
can arise from the passage of time - in which case we are in the realm of dig-
ital preservation. Alternatively unfamiliarity can arise from distance in discipline
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