Edward T. Hall provides a description of culture relevant to international activities: "The people we were advising kept bumping their heads against an invisible barrier. We knew that what they were up against was a completely different way of organizing life, of thinking, and of conceiving the underlying assumptions about the family and the state, the economic system, and even Man himself [persons themselves]."

The salient point in (i.e., main takeaway from) Hall's comments is best expressed by which of the following statements?