System Diffence plotted against density and clique graph metrics. Each graph is generated by calculating System Difference (SD) and a graph metric in 1000 random, weakly connected networks (n = 50) sampled uniformly over density. A random density value was generated for each matrix by adding connections one at a time until the random density was reached or just exceeded. (A) SD plotted against density. (B) SD plotted against omega. (C) SD plotted against average maximal clique. (D) SD plotted against number of maximal cliques.