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After listening to the NIN and Boys Noize collab album...Boys Noize should've helped with the whole Tron: Ares soundtrack because holy FUCK ITS GAS. Like I listen to this album and it immediately gives me Tron vibes, goosebumps man. If you haven't listened to it please do.
I thought this would be interesting to share. When I was studying Computer Science/CIS, I learned that the spelling Disk with a 'k' involves magnetic media (hard disk, floppy disk). That's the spelling used in the 1982 movie.
Disc (with a 'c') refers to optical media (laserdisc, compact disc, digital video disc, etc). When Sam's disc is installed in the Siren scene, his eyes flash (a clever nod to "optical" media). The spelling has updated to disc as well in most promos and merchandise since then.
Therefore, it is my theory that between 1982 and 1989, Kevin Flynn converted from magnetic floppy to some form of optical disc (CD ROM or early proto-DVD ROM like what appeared in Batman 1989). Thoughts?