What gives evman? I thought you were a really smart guy. But here you are unable to get everyone to understand the simple concept of a fourth dimension. Geez.
But really I've read probably half a dozen or so different explanations of the fourth dimension and I can't really understand it let alone visualize it. I'll admit it's over my head.
Anyways, if anyone is interested in a astronomy / debunking blog check out bad astronomy. He also has a good book by the same name.
http://www.badastronomy.com/