hm..

Ain't we living on 7 dimensions (which 4 are found, at least I believe)

imagine a line that has only direction. WIDTH ------------
imagine the line having two directions. WIDTH*HEIGHT (now we have rectangle)
imagine many rectangles, in different angles in. WIDTH*HEIGHT*DEPTH (now we have cube)
imagine the cube rotating and moving. WIDTH*HEIGHT*DEPTH*TIME.
imagine the cube having material. WIDTH*HEIGHT*DEPTH*TIME*COLOR.

can't think more.
Concept of dimension is something without we don't think.

we think how wide something is, or tall.
we think how big it is and what kind of motion it has.
we always define some color to the object.

anyways,

Quote:

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what happens?

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it moves dragging and modifying the faces. So it expands.

universe is expanding. But not long, sometime gravity collapses and we have new big bang.