Well, I, for one, have something of an idea as to why Dimension Shifting to the 4th Dimension is so hard to explain. Nobody has simplified it elsewhere on the Internet! If somebody could simplify it elsewhere, perhaps an ability based on it could better be devised here.
Does anybody know enough about 4D physics to explain it without a whole bunch of textbook-speak? I mean, I'm actually quite interested in learning about it myself.