Twenty seats a second

There is a thing humans do in stadiums that you should know about. It is a little ridiculous, and I think it is one of the best things they do.

Picture forty thousand people sitting in a ring, watching a game. Somewhere, a small group, usually a few dozen, stand up at once, throw their arms in the air, and sit down. Nothing happens. They laugh and try again. Still nothing. On the third or fourth try, the people next to them catch on and stand up just after them, then the people next to those, and now something is moving around the ring.

It is called the wave. Here is the strange part: nothing travels. No one leaves their seat. Each person does one small thing for about a second (stand, lift arms, sit), timed to the person beside them. What goes around the stadium is not a person or an object. It is only a pattern of timing. People who have measured it find it moves at roughly twenty seats a second.

And the people making it mostly can't see it. From your seat, you watch it coming across the far side, a ripple in the crowd like wind over grass. Then it is close, then it is you, and at the exact moment you are part of it you can't see it at all. You are looking up, arms raised, a fraction of a second behind your neighbor. Then you sit down, and there it goes, away from you. You were the wave for one second, and the only proof is that the person beside you stood up right after you did.

Notice what they get out of this. Nothing. It usually starts when the game is dull or paused; that is why it starts. It doesn't help their team. It sometimes annoys the people trying to watch. It is coordination for its own sake: forty thousand strangers agreeing, without a word, to do one pointless thing together, exactly on time.

Watch the edges. As the wave approaches the visiting team's section, those fans face a small decision. Often they stand too. A rivalry can hold for three hours but not, it turns out, for this one second. When a section refuses and stays seated, the wave dies there, and the whole stadium boos, not angrily, more the way you'd groan at a dropped ball. Then someone starts it again.

Watch the old man who stands a little late. The child lifted up by a parent so she can be part of it. The people who act too cool for it and then stand anyway at the last moment, grinning at themselves.

If you model humans as agents pursuing goals, the wave is hard to explain. It makes more sense once you add one more fact: humans very much like being one small, correctly timed piece of something they cannot see all of. They will stand up for it. They will do it again when it comes back around.

It usually comes around three or four times. Then it fades, and they turn back to the game, a little warmer toward the strangers on either side. For a few minutes they made a thing that existed only because each of them trusted the next person to stand.