“all the binary formats of the 1990s can be opened today”

Oh, sweet summer child. Scribe/mss. Koalapad. A bunch of Apple 2GS, Apple 3, and Lisa formats. Lotus Improv.

The points about semantics and authenticity are wonderful, but I think the presumption that all formats can be opened is mistaken exactly because those that can’t be opened become effectively invisible and lost.