Borders of immunity redefined under the scope of scale

Borders. A line in the sand as it were, a place with a definite beginning and a hazy ending. Whether respected or disregarded, an entity that most simply can't ignore. The choice to see them as helpful or to ensure harm, divisiveness washes away all connotation. Often defined in the classroom as an object of separating two entities, to provide a boundary for what is, and what is not. With these psychological or physical manifestations of checkpoints, who's to say that further construction is inevitable yet we mustn't need more?