A cellular automaton devised by mathematician John Conway in 1970: cells on a grid live or die according to how many neighbors they have. Endlessly complex patterns emerge from these simple rules.
Conway's Game of Life, Craig Reynolds’s Boids and Langton's ant are all endlessly fascinating artificial life simulations.
Casey Reas, Casey Reas on the History of Generative Art - Part 2
It feels right in the same way Conway's Game of Life, which is a simple rule system in a way, was proven to be a universal computer. All these little rule systems can produce infinite worlds, which was such a mind explosion when I was younger.
Matt Hall, Larva Labs on Computation’s Strangeness