This is what it has meant since the Greeks. Do you think defending nothing being used to indicate something is a defense of their claims? I have hated grammar forever and used to think it was useless and arbitrary. One day I was discussing this with a national merit scholarship winner and a NASA Engineer (family members) they told I was probably right except for one important thing. The definition of words are necessary so that contracts and legal concepts can be founded on common ground. Usually only those without honor need to redefine words. Clinton and his what does is mean, the lawyer who gets his known to be guilty client off based on a procedural objection, every formal debater who was defeated, etc.. It is always the side without a case that begins to redefine everything. I do not care if they say "nothing" means pink submarines, gravity, or quantum fluctuations it is something not nothing. That is the whole point. Cosmology posits the finite existence of everything natural. They are trying to smuggle in what did not exist to explain what exists by calling it nothing. They are wrong. I get exactly what your saying and what they are doing and I condemn both in this context.
Agreed but that fluctuation began to exist when the universe did and so is not the creator of the universe, same with gravity, energy, and everything else that is natural.
I am pretty sure you mention an oscillation model, however let's discuss it whether you did or not. Oscillations, cycles, recurrences, etc.... are never perfectly efficient. They always lose energy in the effort. That means if the universe had been contracting (which by the way can't be because it's rate of expansion is increasing and not near enough mass exists to reverse this) for eternity it would have ceased to do so an infinite time ago. The same way an infinitely old battery will always be dead.
Vilenkin did not rule out multiverse specifically. Mainly because multiverses all to conveniently are no accessible. They are a theory which can't be falsified which by the way means it is also not scientific. They are a fantasy and do not deserve inclusion in any debate. They also make God more likely with each successive universe. If you have a infinite number of them God becomes a certainty and the only kick the creator problem down the road. They truly are nothing. They are not concrete things any more than blue elephants on Rigal 7.
I would not object to that in general but I also think the universe is supervised in a sense. It certainly has form and structure. My point was to distinguish between intent and non-intentional arrangements of things. Information for example has no known source outside of an intentional mind. The universe is rational, lawful, and full of information that has no comprehensive natural explanation. Science attempts to coax the rationality out of nature. Who put in in there?
I agree if left to it's self it will die a heat death. However like the creation I think it will not be allowed to operate as it is now. The same way something made everything from nothing, he will make order and benevolence out of cold indifference in a sense. This also is a little over eager even scientifically. It is as if we took a photo of a freeway and attempted to predict the future of that freeway in a billion years. It is just too ambitious. I do agree with their reasoning, I just believe their reasoning will be superseded based of faith. Faith in past events and current events is evidenced based, faith in future events can be, but many times it is strictly faith based.
" Agreed but that fluctuation began to exist when the universe did and so is not the creator of the universe, same with gravity, energy, and everything else that is natural. "
Its a natural possible explanation. They don't know yet. Your ruling out something they are still working on.
"I am pretty sure you mention an oscillation model"
Nope, the standard definition of it requires a big crunch and that is not looking at this time how its working by observations.
That is not what I was talking about to someone else in regards to an oscillation model.
Right now the leading theory with very good science to back it up and reasons to think so is the "big freeze."
"They always lose energy in the effort. "
The Big Freeze, which is also known as the Heat Death, is one of the possible scenarios predicted by scientists in which the Universe may end. It is a direct consequence of an ever expanding universe. The most telling evidences, such as those that indicate an increasing rate of expansion in regions farthest from us, support this theory. As such, it is the most widely accepted model pertaining to our universes ultimate fate.
The term Heat Death comes from the idea that, in an isolated system (the Universe being a very big example), the entropy will continuously increase until it reaches a maximum value. The moment that happens, heat in the system will be evenly distributed, allowing no room for usable energy (or heat) to exist hence the term heat death. That means, mechanical motion within the system will no longer be possible.
Big Freeze
Mulitiverses
"They are a theory which can't be falsified which by the way means it is also not scientific. "
Yet, but if they exist it could be very possible.
One way and I am only mentioning one at the moment, is to use the data from WMAP and now the new Planck Data coming in.
New Map of Big Bang Light Hints at Exotic Physics
"And getting to the bottom of the other anomalies in the Planck data may point to even more radical conclusions, such as the idea of multiple universes and bubble universes created by areas of the primordial universe that inflated at different rates.
It turns out that collisions between these bubbles of space-time are one possible explanation for why inflation might not have proceeded uniformly in all directions."
New Map of Big Bang Light Hints at Exotic Physics | Planck's CMB Map | Space.com
You use Vilenkin and when he says "fantasy" he is referring to using a "God did it" explanation.
"They also make God more likely with each successive universe."
No they don't, but if you want to go there why not a different God in everyone one of them and why one, why not a bunch in each one?
God is not falsifiable with science.
"The universe is rational, lawful, and full of information that has no comprehensive natural explanation."
The universe follows its own natural laws. What do you mean the "universe is rational" Huh?
Lawful, well you better not go faster then light or the light police will pull you over. Yes it is full of information, in fact all the information contained within it of itself.
However, things like stars are born die and then are reborn. Which by the way is why the Sun and Earth and life is here. We came from decaying stars. Was it rational for a planet the size of Mar's to hit the earth and almost wipe the Earth completely out and then formed our moon?
The universe is extremely chaotic as well as beautiful.