I'm interested in unpacking what is implied by this word choice "use their literacies." Literacy here is something that gets "used" (like a tool? like an ability? like a vehicle?) to "author the future". We have all grown used to using this plural word, "literacies," so often. What do we believe is at stake when we insist on naming this concept in the plural? Do we all understand it the same way? What other words might we sometimes use interchangeably with the word "literacies"? How must we understand the term "multiliteracies," used later in this article, as different from "literacies" (if at all)? What other critical concepts are rooted in, or linked to, this important word choice?