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Wednesday, 24th February 2010

Avoiding a Digital Dark Age

Kurt D. Bollacker writes:

Over the course of the 20th century and into the 21st, an increasing proportion of the information we create and use has been in the form of digital data. Many (most?) of us have given up writing messages on paper, instead adopting electronic formats, and have exchanged film-based photographic cameras for digital ones. Will those precious family photographs and letters—that is, email messages—created today survive for future generations, or will they suffer a sad fate like my backup floppy disks? It seems unavoidable that most of the data in our future will be digital, so it behooves us to understand how to manage and preserve digital data so we can avoid what some have called the “digital dark age.” This is the idea—or fear!—that if we cannot learn to explicitly save our digital data, we will lose that data and, with it, the record that future generations might use to remember and understand us.

[Snip]

The general problem of data preservation is twofold. The first matter is preservation of the data itself: The physical media on which data are written must be preserved, and this media must continue to accurately hold the data that are entrusted to it. This problem is the same for analog and digital media, but unless we are careful, digital media can be more fragile.

The second part of the equation is the comprehensibility of the data. Even if the storage medium survives perfectly, it will be of no use unless we can read and understand the data on it. With most analog technologies such as photographic prints and paper text documents, one can look directly at the medium to access the information. With all digital media, a machine and software are required to read and translate the data into a human-observable and comprehensible form. If the machine or software is lost, the data are likely to be unavailable or, effectively, lost as well.

The article includes several charts and a bibliography.

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Source: American Scientist

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