Hodgepodge Machine

Dewdney's cellular automaton producing self-organizing spiral waves

Generation: 0 k1=2 k2=3 g=28
About: The Hodgepodge Machine (Dewdney, 1988) is a cellular automaton with n states (0=healthy, 1..n-1=infected/ill, n-1=ill peak). Healthy cells become infected based on neighbor counts using parameters k1, k2, g. Ill cells become healthy. Small parameter changes produce spirals, spots, or labyrinthine patterns — an early model of excitable media similar to the Belousov-Zhabotinsky reaction.