I hope I'm not the last man standing here because there is more to be had from the cauldron of this article and what has been said and debated:

"And time, too, has more than one dimension. I've described some. One dimension of time: You want to travel back in time, try the infinity of universes.... Otherwise, try anti-matter (bang)."

Because of what I've been posting, particularly the above, and because of give and take between 'Rod' and 'David-J-Franks' I've been looking at, studying, and contemplating hard a short article on 'Superunification and the Planck Era' from 'Cosmology' in the encyclopedia 'Britannica'. I found that short article extremely interesting and revealing, and clarifying, to me.

"Space-time" and "mass-energy". "Space-time" and "mass-energy"! SPACE-TIME and MASS-ENERGY?

In picturing infinite, I separated space from time and mass from energy and looked at mass and space as an infinite binary (Big Crunch / Big Hole). I've never viewed or talked of energy as being infinite. I've also only alluded to time as being 'eternal' only in context of the whole of a non-locality of 'Universe' and having nothing to do with time interior to more local (more relative) universes.

I know (I KNOW!) where, what, how, and when [infinite...] is in my realization. I've taken [finite] and [many finite universes] for granted as just being there. I've not taken 'time' for granted, nor have I taken 'energy' for granted, but I have never thought about putting the two together as a binary pair (finite, but the Big Bang energy finite being on a scale of Chaos Theory's macro-macro-verse, the twin, the other or dual existence, of quantum mechanics' micro-verse) just as I've put "space" and "mass" together as a binary pair (smooth, flat, infinite, stuck in between layers of grainy finite; just as grainy finite is stuck in between layers of smooth, flat, infinite, such as the layer of infinite existing down beneath, beyond, the Planck horizon inside every particle that makes us up. This Chaos Theory-like alternate layering Einstein layer upon Hawking layer, so to speak, can monotonously run vertically to infinity, up and out, down and in, but ultimately reduces to [stereotypical] two). I just forgot it when it comes to Big Bang energies (still finite! Not infinite!). In my realization (only concerning the biggest and smallest pictures of all) I divorced space from time as the one being an infinite while the other being a finite. I divorced mass from energy for exactly the same reason. I can picture re-marriages, re-mergers, of infinite space to infinite mass and finite time to finite energy. I can picture the four piece two set polygamous whole as existing. I can even picture it as, how, it should work...

Now, as begun above, I have to reconsider the non-locality of a binary [Big (real time) (universal) Clock / Big Bang Energy].... Why? The very existence of 'FINITE'! The very existence of "infinity of FINITE horizons (finite universes)." The very reason why this article, and Rod, cannot be right about that "expanding forever" (which I agree with you, David, is nonsense, for the same reason). The Big Bang energy, as I see it is a spontaneous vacuum energy regarding each finite [local] universe. Where the Big Crunch / Big Hole is nowhere local, the Big Bang energy is everywhere local, a 0-point real space, real time existence rather than relative time past (-) / future (+). You might say it wells up from quantum mechanics' micro-verse everywhere local throughout an infinity of finite universes (u). Every finite universe / wave / particle. Finite.

The real time (universal) clock is 0-point orientated. That now is forever. That now is eternal, just as Hawking meant it to be (hung on the center pillar of his illustrative Grand Central Station of the Universe). It is every thing's and every one's arrival point at any destination at any time including every real time, real space 0-point enroute. And nowhere is it observable, not even where you stand, though where you stand is 0-point. You observe relative space-time past (-) / future (+) (future (+) being a past (-) in ascension to 0-point (present)) and no other space or time.

The so called 'arrow of time' points past > present > future > (forever). The real time clock deals in time quite differently, as negatives and positives, in relative time pasts (-) to real time's constant of horizon (0), via relative time's futures (+) which are restricted by that same constant of horizon; (-) (+) ever coming together in mutual cancellation, one might say mutual annihilation, to the real time constant of (0-point present). Nothing in the Universe (U) ever travels [through] it. Everything in the Universe (U) always travels with it, to it (The arrow hand of the Hawking Clock always pointing to it (0-point) and never, never, anywhere else)). Everything that can exist, exists somewhere in the infinity of finite universes, including every time.

Rod, and also the article's author, don't realize the "expanding forever" of the universe in the article must run hard into, won't get past, the breakdown to the Universe's already existing constant of 'smooth', the randomization to the Universe's already existing constant of 'flat'. Which I, myself, can't see existing anywhere else, in anything else, but at, in, the constant of the speed of light. (I've been trying to get to this [universal dimension] of 'Universe' the whole damn time I've been dealing in this article and couldn't figure out, couldn't see, a path I liked to it until now. The problem now is someone is going to think it must be finite, just because it has a relative value to us, when its not. Along with certain other constants crowding in with it, and I'm not familiar enough with [them] to really put any with it (so only 'maybe' concerning that jamming, smashing, merging, together), it is precisely what that 'flat' / 'smooth' is, infinity (infinite / infinitesimal) wrapping into itself. Thus for the absolutely inflexibly rigid constant it -- the constant of the speed of light -- appears to be as finite, as infinite it couldn't be more flexible.... Someone else, somewhere, must have realized, or at least suspected, the infinite there in it...that it must be.)

There is so much more but it has been gone over elsewhere. Or will be gone over elsewhere sometime or other. Thanks to Space.com for allowing me so much rebuttal space and time, plus so much fleshing out to go with it and give it context.