Historical “emojis”
Emojis originated as a way to guide the interpretation of digital texts, to replace some of the clues we get in ordinary speech or writing that help us understand what someone is trying to communicate. In person or over the telephone, facial expression and voice modulation help us get our meaning across; in most forms of writing — blog posts, stories, even emails — we have the luxury of expressing ourselves at some length, which hopefully leads to clarity.