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. 2017 Jan 13;8:13800. doi: 10.1038/ncomms13800

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Copyright © 2017, The Author(s)

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(a) Cooperation by game for rounds 8, 9 and 10 for the simulation with 40% resilient cooperators. The timescale is 4,000 games, ten times the length of our experiment, suggesting that the stabilization of unravelling observed in Fig. 5b is permanent. (b) Asymptotic average round of first defection r_∞ versus fraction of resilient coooperators α, averaged over 10 sets of simulations. The single point shows the values (α, r_∞) obtained from our experiment.