The problem with that though, is that they're not expanding into "not-anything," but rather, "something" instead.Good analogy, 13, but apparently still above Iacchus' head. Okay, try this one.
Think of a fireworks display. Now think of one of those displays that is an expanding sphere (I think they call them "chrysanthemums"). The shell explodes and the "fireworks" are sent flying outward. Now consider that the fireworks are the universe. There are no fireworks inside the shell of the chrysanthemum. There are no fireworks outside the shell of the chrysanthemum. Now substitute "universe" for fireworks. The universe is the shell. There is no universe inside the shell. There is no universe outside the shell.
