I know of several people who have stored valuable-to-them information on CDs and DVDs with the expectation of longevity, who are unaware of how transient those media really are.
The Library of Congress Wants to Destroy Your Old CDs (For Science) - Adrienne LaFrance - The Atlantic
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The Library of Congress Wants to Destroy Your Old CDs (For Science) - Adrienne LaFrance - The Atlantic
omni