Cloud

A piece made using algorithms to generate chance, random numbers to generate a random figure, a random code to multiply the figure and distribute it in space like a cloud, a cube randomly dispersed to intersect its surface.
There at the surface the metal takes the random information of the environment, day or night, and makes it flash across the surface.
This is the always changing random algorithm. The random generator intersecting the random environment.  And giving it unrepeated for.
In the same way that the impressionists painted light not things.