Stephen Wolfram announced a class of a one-dimensional binary cellular automaton rules in 1983 and published further analysis in his 2002 book A New Kind of Science. The most famous instance is "Rule 30": a Class III rule, displaying aperiodic, chaotic behaviour. This rule is of particular interest because it produces complex, seemingly random patterns from simple, well-defined rules. Because of this, Wolfram believes that Rule 30, and cellular automata in general, are the key to understanding how simple rules produce complex structures and behaviour in nature. Click the canvas area to generate a new rule at random, or specify ?rule=0..255 on the URL and reload.