Swijjy. Imagine the movement of a spiral galaxy.

Looks like a ninja star or something, right? Spinning around like a wheel? Actually, it doesn't quite move like that. From a distance, the arms don't move much at all, even though all the stars are orbiting very quickly around the galactic center.

How? Because, for reasons unknown, stars slow down in the areas where we see bright galactic arms, and move quickly in the dark areas in between. These are called density waves, and they are similar to the wave that moves across a body of water or the bubble of congested traffic that moves backwards from a road accident. So, considering these waves, how do you know where a galaxy's arm begins and ends? What's the actual shape of the arm if the stars that make up the arm are coming and going so quickly?

A school works the same way. Every year, seniors leave, and freshmen come in to take their place. So, what's the real population of a school over a long period of time? It's not useful to think of it like a permanent body. A population such as this flows like a section of a stream - or the arm of a galaxy.

I haven't yet come across a word to describe this kind of structure, so I'm going to make one: swijjy. If someone asked you where the ocean ends and the beach begins, you would say, well, of course, it's quite swijjy. It's changing all the time.

I really wanted a word for this phenomenon because I find my experience of my own body is very, very swijjy. Food moves quick through my tubes and whatever doesn't get flushed into the plumbing gets popped out as sweat or spit or burned energy. Every breath I take diffuses through every one of my cells. Where does the air end and my body begin? Well, of course, it's quite swijjy.

The model that emerges from swijjology is of complex systems with no permanent parts but very steady forms. Even patterns that seem to have a swijjulating coefficient of zero still flow continuously with their environment: a spoon is not trading matter and respiration with the environment, like a living creature, but is fully charged with electrons that come and go freely, as well as waves of hot and cold temperatures that both define the nature of the spoon and are in constant movement. Pure swijjiness.

If you look at the source code for the simulation below, you will see that I have chosen the noun swijjulon to define a particle of a swijjy system.

above, pictured: you, your highschool, your galaxy

the mouse = a swijjulonic attractor

yellow swijjulon = swijjulating coefficient of 0

blue swijjulon = swijjulating coefficient of 1

[p5.js source code]