A man calls out a string of dance moves by name and dares whoever is listening to keep up. There is almost nothing else here: no story and no claim about the world, just the instruction to watch him and the question of whether you can do it too. The whole thing is a set of steps and a challenge to copy them.

Hearing this, you get a simple cue to move and a low-stakes invitation to join in rather than sit still. It works on kids and crowds because it asks for participation and judges no one who tries. The flip side is that there is nothing to take away once the dance ends, no idea and no feeling, only the moves. It lands wherever people want an excuse to be silly together for three minutes.

Run by millions, this works as a shared set of instructions for moving the same way at the same time. People take up the moves and the dare, and a craze spreads on the strength of how easy it is to copy. There is no message to absorb, only a choreography to join, which is most of why it traveled so far so fast.

A population running it gets a brief common language of gestures and not much else, a thing kids and crowds do together and then set down. It builds nothing and damages nothing; it occupies a season and fades when the next dance arrives. The closest thing to a value in it is the open invitation, the sense that anyone willing to look silly is welcome to try.