What dose the phrase mean. If you and I become the screws in this gigantic machine, we might not be able to resist its powerful pull either.”?

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.