No, I get it now (even without googling). I brought up that reference of if space is finite in another thread (how could it not have a center/edges, without wrapping around)... and also if it IS infinite, how can that be from a seemingly finite explanation of the big bang (x amount of...
Okay, yes, I understand the 2D balloon view. It's focus is on how things (gravitationally bound) things move away from each other over time due to the expansion (and it's accelerating, too).
Questions from your link:
"NO CENTER there is NO center." - Okay. So if there is no center, then...
Okay, I get that. The universe is like the surface of the balloon being blown up. Where it's expansion is more within itself -- not making empty space at all edges "roll out" to create "more room", right? Hence, most galaxies grow further apart over time if they're not too close to each other...
I'm sure geometric changes in it and focuses on that and such don't mean that's All there is (as he points out quite literally elsewhere in other circles that space is a substance of sorts).
However, it'd be a separate argument to say space would be a substance in the same sense that we...
But you didn't directly answer the question. :) And they aren't dancing around words to make something clearer to the masses. You could pick apart some things they're saying of course and say "Well, technically, this doesn't Really work this way, it actually works This way, but you can think...
Back to the OP's original concern... Brian Greene, no, was not talking purely analogy. He LITERALLY meant that space IS a "thing", and not a complete void at all. Not in the sense of the geometry or boundaries of "nothingness", but that it's not a complete void -- there is a something -- not...