Chapter 9: Fundamental Physics

Section 2: The Notion of Reversibility

Rule 37R

Complicated structures are fairly easy to get with this rule. The initial condition {1,0,1} with all cells 0 on the previous step yields a structure that repeats but only every 666 steps. The initial condition {{0,1,1}, {1,0,0}} yields a pattern that grows sporadically for 3774 steps, then breaks into two repetitive structures. The typical background repeats every 3 steps.

From Stephen Wolfram: A New Kind of Science [citation]