Time
There are two different views on the meaning of time. A view of time is linear and part of the basic structure of the universe, the realization of events in the network, and the time itself is something that can be measured. This is a realistic view of Sir Isaac Newton himself. The opposite view is that the time part of the basic intellectual structure we describe in its event, quantify the duration of the event and the stop between them, and compare the movement of the body. In this view, time does not refer to any "flowing" entity, ie the body "moves through", or a "container" to the event. This view is in the tradition of Gottfried Leibniz and Immanuel Kant, at one time, rather than being an objective object to measure, it is part of the system of mind size. The question is, it might be easier to have no centralized basis, then what time is the "real thing" that is "around us", or is it just beyond the way of speaking and measuring events? In physics, time and space are considered fundamental.