Moreover, in her description of our evolution, Fisher notes that males who could tolerate long periods of silence (waiting for animals while in hunt mode) survived to pass on their genes, thus genetically selecting to prefer “space.” By contrast, females survived best by bonding with others and building community, since such groups were needed to gather roots, nuts, and berries, while caring for small children.
此外，在对人类进化的描述中，费舍尔强调能够忍受长时间沉默的男性（以捕猎状态等待猎物）能将他们的基因传递下去，因此从基因的角度讲他们会选择“空间”偏好。恰恰相反，女性则只有通过与他人合作、形成团体才能更好地生存下去，因为她们需要团体来采集块根、坚果和浆果，并同时照顾孩子。