In any sufficiently large organization there will be lost files,
ones that are physically present but "lost" due to the owner
keeping important contextual information with him and either
leaving or dying. These lost files could be either paper or
digital; doesn't matter much.
sufficiently large = 15+ people
sufficiently old = 10+ years
- - -
The thing that might have been the seed for
all of this "NASA lost data" mythology
I remember hearing that evidence of the polar ozone hole had
been faithfully recorded for years, and that only by using graphics
to view the collected data did it become obvious that it had been
happening all along.
There must be other stories. NASA is both large And old.
John A.