DLA is short for "diffusion limited aggegration"[0]. There are particles performing a random walk [1] and they aggregate (= stick together) if they come close e

DLA is short for "diffusion limited aggegration"[0]. There are particles performing a random walk [1] and they aggregate (= stick together) if they come close enough to each other. In the second experiment with directional bias the particles are experiencing a constant drift on top of the random walk (or are maybe having unequal probabilities of moving in different directions?) [0] https://en.m.wikipedia.org/wiki/Diffusion-limited_aggregation https://en.m.wikipedia.org/wiki/Diffusion-limited_aggregatio... [1] https://en.wikipedia.org/wiki/Random_walk https://en.wikipedia.org/wiki/Random_walk