[cristian]

Thanks force5
"On your two options pertaining to where it all came from, I choose option 2."
Option 2 said that all components of the BB (matter, space and some rules for interaction) already existed, and were not created together with the BB. This makes the BB itself not very special. If you cram all those elementary particles in such a tiny space it's no wonder they will "expand rapidly" like you said.

Therefore the BB is not all that interesting, but the actual creation of these things is, regardless if this creation happened together with BB, or long before it.

Fair enough to say that the amount of energy created at the beginning is the same as the one floating through space now (conservation law). It's not very clear how this energy forms into matter, and how matter interacts, but many people around here seem to have some ideas. But my question was about space itself, not as in "what's in an empty space" but rather "what does movement through space mean".

Ok if there exists a "vacuum energy" but how does it explain concepts like "direction" or "distance"? What does it mean that a particle has "moved"? Why do things tend to move in a straight line until told otherwise? These concepts are taken for granted when one talks about particles or their interaction.

I insist on this because all known forces seem to be functions of space, that is they affect a particle's position rather than anything else. How can you understand the force if you don't know what "position" is?