[MrRubix]

I've always had a huge problem with the 4th dimension being "time," be-all-end-all, because it would imply that, say, a 2 dimensional world has no "time." Can I not move around in a 2 dimensional world? I think too many people try to understand the 4th as "time" and then they get confused when they think about what higher dimensions really mean.

I would say the 4th dimension is "time for 3d beings" or something similar, since I think we can define 3d as "time" for a 2-dimensional being. We need some way to explain how we change from one state to another within a given dimension by utilizing the dimensions above.