Musing again, this time about a collapsing universe falling into a dimensionless singularity and exploding into the present universe that we are, at least partially, aware of. I began to envision the collapse, not the "bang." It seems to me the mechanics of the collapse are difficult at best and improbable at least.
What happens as all this matter begins to get close and jostle for room? Well, first off, heat. So much heat that the whole thing stands the risk of never collapsing. There was once an argument put forth that the heat from our sun is created by the collapse of solar matter upon itself. I'm not certain this has been totally disproven. While much of the heat of the sun comes from the fusion process, I wonder if there actually is a portion of the heat formed by collapse and shrinking of the sun. Measurements of the solar disk have been made at Greenwich observatory for a couple of centuries. That is not enough time to determing solar radius changes. It's like trying to determine if a child's temperature is falling by taking their temperature ten seconds after you first determine they have a temperature. Solar events may have a rate that is not very easy to determine in human time spans.
So, the sun may have a portion of it's heat produced by shrinking. Certainly the shrinking universe would and it would be a lot of heat. Heat, as we all know, produces expansion and would delay and even prevent further collapse. Then, assuming we get past the heat of collapse, there is the heat formed by the chemical interaction of this molecular soup being squeezed tighter and tighter. In addition, there would be the heat formed by further fusion reactions from the masses of hydrogen and other light elements, creating one super nova after another and recreating a universe repeatedly, even if smaller than the one we now think we know. I'm sure others may come up with even more "events" on the way to a big bang if such a bang were even possible.
Where did all this matter come from? Dunno. Does it really show that it all comes from a single point? Hmmmm. Tricky. Are there other options? Too many to count and the mind boggles at just trying to think that matter even exists in the first place.
Now, I have doubts about the methodology of the "big bang' and the thinking that goes along with it. I'm not happy with "Divine intervention" either. Or with Aliens. Or with some kind of random event. However, the matter is there and must be explained (if you like to know, and I do). Where ever it all came from and however it was created, I'll be happy to have it not get a second universe created anytime soon or anywhere near where I'm at (that is if it's a Divine or random event). Afterall, if the Divinity could kill off all but a handful of humans simply because that Divinity had "regrets" over creating humans in the first place, perhaps the same Divinity might decide to "have regrets" and start over. If it's random then who knows if it might just break out all over again, pouring super-heated matter all over our poor little solar system and even more importantly, you and I. Maybe we'd better start being nice to each other to avoid Divine intervention, at least.