Pissed off.
Ben Crair on how the humble period has taken on an aggressive tone recently:
“In the world of texting and IMing … the default is to end just by stopping, with no punctuation mark at all,” Liberman wrote me. “In that situation, choosing to add a period also adds meaning because the reader(s) need to figure out why you did it. And what they infer, plausibly enough, is something like ‘This is final, this is the end of the discussion or at least the end of what I have to contribute to it.’”
It’s a remarkable innovation. The period was one of the first punctuation marks to enter written language as a way to indicate a pause, back when writing was used primarily as a record of (and script for) speech. Over time, as the written word gained autonomy from the spoken word, punctuation became a way to structure a text according to its own unique hierarchy and logic. While punctuation could still be used to create or suggest the rhythms of speech, only the exclamation point and question mark indicated anything like what an orator would call “tone.”