Knowing what an actual carbon copy is, or how telephones used to look like, or that the save icon is a diskette - all of these are becoming Sheldon-esque ”fun f

Knowing what an actual carbon copy is, or how telephones used to look like, or that the save icon is a diskette - all of these are becoming Sheldon-esque ”fun facts“, semi-interesting historical tidbits. I’m really curious which effect the digital age will have, long-term. How many other symbols and physical world metaphors will fall into obscurity?