Dimensions

Well, surely everyone has once or more often tried to conceptualize the 4D space, so what's yours like?

 Elaboration on question, if needed

At first, I thought this was a rather lame depiction of 4D space, seeing how it's more like 2x 3D instead of 4D. But upon reflection, it seems fair enough to me. From 2D to 3D, the object will have to travel in a direction never known before: Up. The same can be assumed for 4D space, a direction we were never aware of up to date, the question is, what is that direction like?

In 1D, you can only either move forward, or backward. In 2D, you can move like you can in 1D, but another direction has been opened up, and you can also move forward and backward in that direction. Up to 3D, another direction became available and you can also move freely (in any multitude) forward and backward in that direction. This is what struck Miegakure's 4th direction as odd, since it's simply a "warp", not a "movement".