From the Introduction by Grace Loh Prasad:
A hand or patch over one eye. A rainbow flag. A kneeling athlete. An eggplant emoji. A thumb pointing down.
What do these have in common? They are all symbols, representing something more than what is literally pictured. A symbol is a kind of sign — at its simplest, a unit of meaning. Whether they’re labels for places or ideas, indicators of prestige or health, or warnings of what’s ahead, signs operate at a level deeper than language. A sign is like a boat, but instead of water it navigates through meaning, through a shared set of references within a community.
Read the rest of the introduction, here.