To Ray and others who like geometry,
I just wanted to point out that the idea presented in my essay has a geometrical basis in tetrahedral geometry too. If matter, energy, space, and time are the vertices of a tetrahedron, then space-time and matter-energy are edges that are separated by other edges, and rotated by 90 degrees from each other. They never touch, and their relationship to each other is established by the remaining links.
Pretty cool, huh?
All the Best,
Jonathan