No, this is not an Indus Script post, though, in a way, it is about language. Spoken language, that is.
Take away all words from a speech or a conversation and what are you left with? This.
Click on the example titled "Strangers on a train", which is a well-known scene from a Hitchcock film. Compare to the original (find it on YT), take notes and discuss why words are neither necessary nor desirable. Using smoke signals or Harappan seals, preferably.