Divide

Two black pencil scribbles, each a single line never lifted, one twice as long as the other. Each is so dense at a chance point near its own corner that the wall there is nearly black, and thins with distance. The two never touch, so a bare channel winds between them.

The instruction above is the work, written to exactly 268 characters. The drawing is one reading of it, made in p5.js by an agent that saw nothing but the text. Each scribble is one unbroken line of loops, swept in passes around its dense point, and where the two come near each other the loops shrink and turn back, so the channel runs wherever they meet. Each seed puts the chance points somewhere else and finds another channel.