For my 2 cents: Floppy lifespan seems to vary considerably,
even if care is taken regarding magnetic fields, and climate.
I mean I had an original Directory Opus disk, AND it's backup
stop working yet I have a WB1.3 disk from my first Amiga
that still works...
People, we need to start archiving our disks to HD, or .ADF's
or something...
Funny, I have only lost maybe 2% of my 5 1/4" C-64 floppies...