Three Dimensions?

Well, I had a fascinating evening tonight - I met someone who enjoys discussing far out quasi-philosophical conundrums as much as I do. We covered topics as diverse as objective vs. subjective time, universe boundary lines, and the value and significance of phi. But among the myriad enigmas that we probed, one of the most interesting was the issue of dimensions. Not the fancy big type that contains the cosmos and everything (though we talked about those too) but just your line-square-cube type dimensions. It's common knowledge that our existence takes place in three dimensions; we take this fact for granted and can hardly imagine anything else. But what if (I questioned) we were two dimensional beings? A merely mildly engaging speculation until you pause to consider the consequences. If we were two dimensional, for instance, we would be trapped if a circle (or any complete shape) was drawn around us. We would have no height in our world, and therefore wouldn't be able to climb over or burrow under the line. Imagine then (stay with me now) a person, living in a two dimensional world, that was able to operate in three dimensions. Say that this person was imprisoned by his fellows (i.e. they drew a circle around him) - what is he going to do? Just step over the line of course. It wasn't even the slightest difficulty because he was able to make use of another dimension that built on and superceded the other two. Now make a wee mental transition and translate that to us. If someone was able to exist in four dimensions would he really have any problem walking through walls or appearing/disappearing at will? Probably not. You see, people are very quick to label certain accounts as "myths" or even flat false just because the events in them don't line up with their smallminded view of reality. For example, when Jesus came to his disciples after his death, he "appeared" among them (and the entrances were all closed and barred). It's easy to dismiss this as impossible, but all you can truly say is It would be impossible for me. For someone with the power of another dimension at their disposal, it would be as simple as stepping over a line.