[mwcampbell]

Here's an example from Brian Moriarty's retrospective on the game "Loom" [1] in 2015, a mere 27 years after work on it began in 1988:

"The third disk here is the only known copy of the original design documents for Loom. It's an 800K Macintosh floppy employing a proprietary format readable only by a vintage Macintosh drive (thank you Apple). In preparing for this lecture, I obtained a dusty old Mac which had not been turned on since 1997. After reseating all the cables and boards I got it to boot and determined that the files on that disk are still intact and still fully readable. A few moments after making this happy discovery however, and before I could actually retrieve those files, the hard drive in the Mac crashed and died permanently. I'll recover the files eventually, but for now you'll have to rely on my failing memory for how Loom was conceived."

[1]: http://ludix.com/moriarty/loom.html (I transcribed the passage above from the video)