Great, challenging reply. Of course, the book is written from a human perspective, and it is "fiction" - but the "dimensional" attack is something that stays with me.
The change of "perspective" by having access to less, or more dimensions, is an interesting one, which is an idea explored in a few chapters of the book. Its really my only exposure to these sorts of concepts, which are difficult to fathom.
RE: What is 5D? How Does it Differ from 3D? Why the Split?