Before revision:  The study provides new knowledge about the conditions under which cooperation may evolve and persist . The results are furthermore important to consider in regard to cooperation experiments, as they imply that stochastic initial correlations between cooperativeness and network position can affect the results of such experiments.
After revision:  The study provides new knowledge about the conditions under which cooperation may evolve and persist , and the results are also relevant to consider in regard to cooperation experiments, as they imply that stochastic initial correlations between cooperativeness and network position can affect the results of such experiments.