Originally Posted by Vagrant Storm
I guess I've always thought of the Big Bang along the lines of a star going Super Nova...massive expanding followed by an explosion (or something so close that the term fits) in the center throwing matter every where. Nature has plenty of existing mechanics...I doubt it would invent a new one "just" for the Big Bang. It is a big deal to us, but nature wouldn't care about it.
It is much, much, much more complicated than a star going super Nova. First, At the first instant of the big bang, if there really is such a thing as a first instant because we don't know how time came into existence, or if it is continuous or discrete, space itself had to be created, and it is argued by physicists that it expanded much more quickly than the speed of light in a process called inflation. This prevented the early universe from collapsing back in on itself . In the early universe, the laws of physics were not the same, as the laws of physics we observe now change as a relative function of the temperature of the universe. For example, forces start to merge at extremely high energies like the electroweak force. Furthermore, there were no traditional three dimensions in our universe until the big bang occurred.
In some sense reality did invent a new mechanical system for the big bang. If you accept the multi verse theory, which is heavily dependent on inflation, then you must accept the anthropological principle, which is that we have to be in a universe with our particular laws because we are here. The multi verse theory posits a bunch of universes in the 6th dimension, if you call it that, which have different laws of physics that are "invented" by random chance in a phase space with all possible values. Perhaps this 6th dimension is finite, but unbounded and unending, which would explain why we have no colliding universes. Universes that can exist exist because their laws of physics are balanced enough survive, and those without the balance don't survive. It's actually just cosmic evolution on an infinite scale. The infinite hotel is a good example. You wouldn't expect to get a particular number in the hotel, but if you were already always in a particular room, then you would expect that room to have the value that you have.