What Buckley is referring to here is the benefit of unity, of having everyone in a complex enterprise share a common relationship. There is a useful concept in psychology that, I think, makes it much clearer what he’s speaking about. This is what University of Virginia psychologist Daniel Wegner calls “transactive memory.” When we talk about memory, we aren’t just talking about ideas and impressions and facts stored inside our heads. An awful lot of what we remember is actually stored outside our brains.
