The target article offers a game-theoretical analysis of primitive intergroup aggression (i.e., raiding) and discusses difficulties in achieving peace. We argue the analysis does not capture the actual strategy space, missing out “do-nothing.” Experimental evidence robustly shows people prefer doing nothing against out-group members over cooperating with/attacking them. Thus, the target article overestimates the likelihood of intergroup aggression.

中文翻译：

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实验证据表明，群体间关系默认是中性的而不是攻击性的


目标文章对原始群体间侵略（即袭击）进行了博弈论分析，并讨论了实现和平的困难。我们认为该分析没有捕捉到实际的战略空间，错过了“无所作为”。实验证据有力地表明，人们更愿意对外群体成员无所作为，而不是与他们合作/攻击他们。因此，目标文章高估了群体间攻击的可能性。