 Noticing that the figure consists of certain particle-like objects sprinkled on a more-or-less static background, the simplest (most natural?) thing for you to do (…) is to begin cataloging the various “particles” and their “interactions.” (…) What you almost assuredly will not have, is any idea that the underlying physics really consists of a single—very simple—local deterministic rule(…). How different is this alien two-dimensional world from our own? (Ilachinski 2001: 662).