We reached the point (some time ago) where the save icon being a floppy disk makes absolutely no sense to anyone born after a certain time. We could choose a more modern media format and use an icon of that instead, but we would run into the same problem once that media becomes obsolete.
What is a good icon for the function of saving something that can easily be understood by anyone regardless of language or the march of time?
Edit: I know it’s not really an answerable question and is hard but the question is what would you come up with if tasks to design an icon. Given the constraints of the question, what are your best shots at coming up with something that fills the requirements and why do you thing it would work?
That’s a fair answer. There is nothing saying the floppy disk can’t work. By sticking with a symbol that has no actual bearing on function (from the perspective of the future people) you’ve abstracted the concept of saving away from natural language. However, you still place a computational burden on those future people/aliens/whatever where they need to be taught what that icon means.