And then there is the powerful and ancient weapon - the arrow. When was the last time arrows had heads like this ->? What would we substitute them with in our f

And then there is the powerful and ancient weapon - the arrow. When was the last time arrows had heads like this ->? What would we substitute them with in our flow charts and graphs (the nodes/edges kind)? What would we use instead to point people to restrooms? Haskell would be deprived of a major theoretical weapon, not to mention a notational glue of its famous type system (a -> b is the type of a function that takes type a value and yields type b value). 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)