Does this tell us that every now and then we should back up
our files?
On the other hand, sometimes this backfires. My old, faithful
half egg iMac was getting bad at remembering, so I carefully
put all my important stuff on disks.
Now, with a new iMac, I've discovered that the operating system
is different, and most of what I've saved is about 300 pages of
gibberish!! Sob...