Pbartender said:It was a joke...
However, since you brought it up...
Any volume can be elevated above floor level. But the resulting effects are determined by the shape the rules use to approximate it. A sphere can be targeted in the air, so that it has a smaller "footprint" at floor level. A cube cannot (unless you tip it on a corner, but that's another story).
I don't understand this at all. If you elevate the center of a sphere with a radius of 3' to a point 5' above the ground, anyone lying prone would not be affected (as they would be in the 2' area between the bottom of the sphere and the ground.
If you do the same thing with a cube that has a width of 6' (which is the cube you would need to inscribe said sphere into it) you get ... exactly the same thing. The center of the cube is 5' off the ground. 3' of the cube hangs down leaving a 2' gap between the base of the cube and the floor.
The fact that the system now counts all squares that are "touched" by the edge of a circle or sphere as squares within the area (as opposed to the old system that said that any square that wasn't completely contained within the inscribed circle was "safe" from the effect) is not, in fact, relevant to this particular example.