Around halfway through I jotted down a few thoughts. I like and appreciate people thinking about this sort of thing however, so I'm not saying any of this to offend. > I don't see any reason that we couldn't be storing our files in abstract squares rather than folders in the sky. ...because they're called folders, and we know how to use them? If I said, "Here, have a square," is your first instinct really to think oh…
Actually the post points out something interesting - we are in the midst of a transformation from a pictorial communication system to an ideographic language where the connection between symbol and signified becomes arbitrary. Nothing wrong with that "arbitrariness", but the visual language continues to evolve - maybe we'll see a paper clip icon even in "Avengers"-like interfaces for this reason.
(edit: fixed typos)