Yeah...yeah...I know the idea. All those are so many words... but what do they mean in real 'physical' terms?!
Do you mean in terms of physics - in which case it means exactly what's been explained already - or in terms of our everyday understanding of the universe? In everyday terms it's meaningless, because the conditions and behaviour, although guided by exactly the same rules and principles, do not occur in a recognisable fashion - the magnitude of the forces and the scale of activity mean that our understanding of the balance of fundamental forces is insufficient to grasp the activity.
We talk of a Singularity which is no more than a point, from which the universe arose. We then talk of a sudden expansion (inflation). We then talk of the creation happening everywhere and not in one place (where everywhere if there is no space?).
No, we don't. We don't talk of 'creation' at all. All the matter and energy was present before the expansion started. The expansion occurred throughout that matter and energy - what, if anything, it could be said to expand into makes no sense; those dimensions into which it expands only exist within the universe, they are the universe. What pre-existing dimensions those new dimensions existed within is something we don't have enough information to determine.
We then talk of multiple universes existing simultaneously.
We talk of the possibility of multilple universes - again, we have insufficient information to determine what might or might not exist outwith the universe.
We then talk of an expanding universe and Dark Energy. We then talk of light from the Big bang arriving on earth after 13 billion years
Well, we hadn't been here, but we could, yes.
All these things don't add up.
They do. You might not be able to add them up, but that doesn't mean that they don't add up - it's your limitation, not the limitation of the description.
My point is that I don't think anyone has any idea what exactly happened and how (and we are not likely to!). So...we should stop pretending that we do.
That rather depends on how exactly you'd like it described. We have pretty solid evidence for the rapid early expansion of the universe sometime a little over 13 billion years ago, from an extremely hot, dense collection of all the matter and energy of the universe.
I think its only in a simulated universe (like a virtual reality world)...that structures can be created without actual space being available.
No, it's only within the actual universe that our model of physics - which requires four-dimensional space-time for objects to exist within - that this restriction applies. We have no idea what restriction might apply to extra-universal physics.
O.
