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Richard -

I've printed out for my reference your description of the storage system
you are using. Yes, it's all data, whether analog or digital. And a system
like yours still needs to be tended by human beings, whereas CDs stored in
a fortified bunker could conceivably withstand an atomic blast. But in that
case we may have yet more serious problems, requiring leaving behind
instructions for building a playback device (understandable even by an
alien cultures) - much as NASA has done with the gold record riding the
Voyager probe far beyond our solar system into deep space.

http://voyager.jpl.nasa.gov/spacecraft/goldenrec.html

Russ

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Russ Hamm
Ed Tech Specialist
National School District
San Diego, CA
http://nsd.us