Orbs and Cubes
That orbs are the three dimensional shape of the ruling class is well known. One can hardly think of an orb without it being in the hands of an egomaniacal villain. But why this is so, and how other volumetric shapes fit into its environment, is less obvious.
Orbs belong to evil men because they represent a way of organizing space that only makes sense for a perfect god or an evil man. Orbs originate from their centers. However large they grow, they always represent the same idea of centrality, and the collapsibility of that surface back towards the center.
There is only ever one orb. If other orbs exist they are merely surface phenomena freckling the face of the one true orb. Of course, in reality there are many orbs, and they are all held by madmen believing they hold the one orb.
The opposite of the orb is the cube. There are always many cubes. They are made for building, for interoperability with other cubes, for the assembly of ever larger structures that may or may not be cubes. Even cubes that are poorly designed for interoperability (i.e., they have dimensions that are not multiples of other cubes) can be integrated one place or another. Cubes can build anything.
Cubes can always work together. Orbs never can.