The Uncertainty Principle states that knowledge is somehow inaccessible on a fundamental level, that the more precisely we measure one quantity, the less precisely we can know another associated quantity.
The analogy would be naming and meaning, where the act of naming truncates some properties and highlights others in our understanding of the true meaning of a natural object. The purpose of naming has nothing to do with the true nature of the object; rather it is a classification system for the purpose of enabing the selection of an appropriate tool for the accomplishment of a task unrelated to the true nature of the object itself. We can imagine early hominid thinking: want rock to throw, want big rock, this pile, want little rock, that pile. Thus, our innate mental orientation to the use of tools distorts our understanding of the true nature of what is around us. And to the extent we view people as tools (headcount, boots on the ground) we fall further away from human understanding.
By chosing not to use people for any purpose at all (close friends, perhaps?), we have the chance to better know them. Being with them non-verbally improves our chances further, as we avoid the sorting effect words have on our thinking. Consider an Amish quilting bee, women working together for hours without talking. Can you imagine how well they know each other, and in a fundamental way that thinking and words would never get to? To reduce the barrier between self and not-self, we need a quiet space.