[QUOTE=erie774]
Exapno Mapcase your answers to 2 and 3 seem circular. might as well be “Which came first, the chicken or the egg?” What is the space forming from? What is it expanding into? Expanding into nothing is meaningless.
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It may be meaningless to you, and probably is. That’s probably true for most people. As I said it’s a difficult concept to grasp.
However, just because it’s a difficult concept does not make it untrue. You cannot dismiss everything that you don’t understand. People who have studied the subject in enormous depth and detail have modeled this mathematically in a way that is agreed upon by practically everybody. The math does not translate well into ordinary English everyday “common sense” language, true. That’s not the physicists’ faults. If you or I don’t get it without a complete understanding of the math, it’s our problem to overcome. Saying that it’s meaningless is a confession of failure on our parts, and not a, ahem, meaningful critique of physics.
bonzer has already responded to your other objection. Again, it’s a matter of your not understanding the physics rather than a fault in the physics itself.
I recommend books in these threads because understanding in English of what these concepts mean is essentially impossible to come by in these paragraph-long posts. Even the first steps toward comprehension require entire books to build the edifice brick by brick, so to speak, to lift oneself from the basic elements of the theories to their deepest implications. (Can one lift oneself to the depths? We’re already in trouble with the English. 
) I’m partial to Brian Greene’s excellent books, but other physicists including Michio Kaku, Kip Thorne and Lawrence Krauss have also written fine popular science for the layman. You need an actual working physicist to write the book. I haven’t found any popular science writers who are capable of translating the math into English.
And that’s the be-all and end-all of the problem. We’re talking about the implications, effects, and manifestations of mathematical concepts that do not exist in our lives, have no physical analogs we can relate to, and make little sense without an extensive background in more basic, classical, physics just to begin to grasp. For the vast majority of people this will not look at all meaningful, because there is no good way to look at it with familiar eyes. Only with the help of a good guide can you glimpse what the current thinking suggests. Read a good book; in fact, read several to get a variety of perspectives, a variety of analogies, a variety of backgrounds, and a variety of emphases. It is work, to be sure. I find it rewarding but it’s not to everybody’s tastes.
But not meaningful? I don’t think so.
