Now that you have clarified the differences between the four models listed (you have most probably thought about lines that are composed of things like “people in line,” or “parts waiting to be worked on,” etc) use your imagination to conceptualize a “large-scale” application of waiting line theory that would solve (or at least shed some light on) a large-scale problem common to a facet of society. POST a description of that application, and a brief discussion of why and how waiting line theory might be used to provide insight or a solution to a problem.