Simon was busy with Diffusion-Limited Aggregation, the code he learned from Daniel Shiffman’s Coding Challenge about the generative algorithm “Diffusion-Limited Aggregation.” The DLA visual pattern is generated from random walkers clustering around a seed (or set of seed) point(s). Simon has made it possible to switch between different DLA examples in his sketch. Test 1 is available online at https://alpha.editor.p5js.org/simontiger/sketches/H1Lobj7EW