We should always bear in mind that numbers represent a simplification of reality. - Kenneth E. Boulding

There is reason for this shift of emphasis from any actual price to a hypothetical 'equilibrium' price. It is usually more interesting to know where a train is going than to know exactly where it is at any moment. The 'equilibrium' position of any price, wage, firm, industry, or system is the position toward which it is tending. The importance of equilibrium analysis, then, is that it enables us to discuss the directions of change. If a train is in New- York and its 'equilibrium' position is in Chicago, we are reasonably confident that the general direction of its motion will be westward, even if it unaccountably decides to travel north for the first hundred and fifty miles.

A distinction does not have to be clear to be important, and, at some point, there is a common-sense dividing line between procedural and violent conflict. Violence is most closely associated with conquest as a form of conflict settlement, though violence is descriptive of a conflict process rather than of a conflict settlement. It is quite possible, for instance, for conquest to be nonviolent, that is, for one party to be absorbed in another or for one organization to be dissolved by strictly procedural means. Departments are organized out of existence, countries are federated or united, organizations are laid down, and firms are bankrupted by purely procedural processes, without more than perhaps a trace of legal coercion lurking in the background.

As I sit at my desk, I know where I am. I see before me a window; beyond that some trees; beyond that the red roofs of the campus of Stanford University; beyond them the trees and the roof tops which mark the town of Palo Alto; beyond them the bare golden hills of the Hamilton Range... beyond that other mountains, range upon range, until we come to the Rockies; beyond that the Great Plains and the Mississippi; beyond that the Alleghenies; beyond that the eastern seaboard; beyond that the Atlantic Ocean; beyond that is Europe; beyond that is Asia. I know, furthermore, that if I go far enough I will come back to where I am now. In other words, I have a picture of the earth as round. I visualize it as a globe. I am a little hazy on some of the details... I probably could not draw a very good map of Indonesia, but I have a fair idea where everything is located on the face of this globe. Looking further, I visualize the globe as a small speck circling around a bright star which is the sun, in the company of many other similar specks, the planets. Looking still further, I see our star the sun as a member of millions upon millions of others in the Galaxy. Looking still further, I visualize the Galaxy as one of millions upon millions of others in the universe.