I’ve been thinking about how punctuation marks exhibit self-reference. A mark might indicate something about a sentence, and also embody that same thing: it might be what it describes.
The simplest example is the period. The period tells us the sentence is ending, and in fact it is the end–it’s the very last character that we consider to be part of the sentence.
This constant conjunction of indicating “the end” and being “the end” is so familiar to us that the distinction can be hard to see. Imagine, then, that we were taught to write like this:
Punctuation Rule #1: Place the period after the penultimate word of the. sentence
Of course, that’s a dumb rule, but it shows how, with a different usage convention, the period would not be self-referential. In this altered system, the period tells us where the sentence ends (always after the word that follows it) but it isn’t the end (there’s one more word to go).
Now consider the exclamation mark! The exclamation mark is self-referential because it indicates emphasis, and yet by being less common than the period, it commands our attention and thereby creates emphasis when it occurs. Of course, if we overuse the exclamation mark, it ceases to stand out, and becomes less effective in creating what it indicates.
Punctuation Rule #2: Use it! The exclamation mark! Wherever possible!
In followup posts, I would like to argue that two nonstandard punctuation marks: the interrobang and the irony mark, are a field-day of self-reference. In particular:
The interrobang is baffling‽
The irony mark is the most ironic thing ever conceived⸮