Let's do a little bit of math work. You're given a pattern, and told that there is no other information available to the entire human race at this current time to identify this pattern! The pattern is as follows: 1 2 3 4 5 6 X. Based on this available information, what is the most logical value for x? 7. Now, in our known universe, there also exists a pattern. A point, has a value of infinity^0. It has an area of one POINT. It is one point. The dimension of it, it one point. A line, is an infinite number of points on an X or Y Axis. Infinity ^ 1. An area, is an infinite number of points on an X AND Y axis. Infinity ^ 2. While the number of points do not increase, the limitations on the locations at which these points can exist increases exponentially. As a point has no identifiable area, in any dimension from a point itself, to a cube, there will always be room for infinite points. Now, the complexity constraints of where the points may exist will increase one more time when we move to the third dimension. Infinity ^ 3. Volume! Still, infinite available points, but now, an infinitely larger area to place them. But hey, you can have all the gold cubes in the world, but you can not spend them if time never happened! Why do you think time appears LINEAR to us, when we live in the third dimension? That's because the fourth dimension is also a line. It is a set of points in time, in which, any volumized object can exist. Now, there's another pattern that emerges. For a point to exist, it needs to exist on a line. Why? Because you can not define its location otherwise, and without defining a location, it can not be observed. That which can not be observed within Dimension 2, that exists in dimension 1, doesn't exist, as it's not "part" of the dimension. So, for a point to exist, it needs a location on a line. For a line to exist, you have to locate it on a plane. What is a plane with a thickness of zero? Nothing. It needs a Z value, a thickness, or it is literally, nothing. Now, what logically defines the NEXT LINEAR dimension by which we regularly define the location of matter within our universe? (Note that each advancement in dimensions previously only increased the complexity by a line, or +-infinity, multiplied into the number of existing points.) Everyone experiences a linear travel in this world, by which our physical bodies and all matter moves. It moves through TIME. Therefor, i theorize, that dimension four, is, in fact, time.