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How Wealth Accumulation Can Promote Cooperation

Figure 1

Evolution of cooperation over time.

Snapshots of the lattice of a typical run (red denotes defectors, blue cooperators). (A) We start at with 50% cooperators. (B) After only a few steps (), the number of cooperators has dramatically decreased, and only a few cooperative clusters survive. (C) Those who do survive, however, expand () and (D) ultimately take over the entire lattice ().

Figure 1

doi: https://doi.org/10.1371/journal.pone.0013471.g001