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Research suggests Big Bang may have taken place inside a black hole
521–530 of 647 posts
Re: Research suggests Big Bang may have taken place inside a black hole
#522I have two problems / questions with this: 1. This theory requires a parent universe that can't have been formed inside a black hole. This means there must a be second "universe creation" mechanism that we can / may never know about from our child universe. For me, this doesn't really answer the true question: "How did our universe begin?" Yeah, it may the "unknown field with strange properties" but instead we get an…
> requires a parent universe
Does that repeat forever? Does it lose energy in the bounce? If so, to where and how?
> The black hole in the parent universe must be much much bigger than anything we see in ours
Most importantly, you don't need everything all figured out at once to publish. Then no one would always publish. There'd be nothing to improve on. Only one publication that says everything. Till then, everything does have criticisms and is incomplete. It's good to have criticisms! They lead you to the next work!
Re: Research suggests Big Bang may have taken place inside a black hole
#523Earlier quoted context omitted.
I feel like quantum physics is gently pointing us towards the idea "everything you can imagine is real at once". As in, all possible universes and physics systems and whatnot do exist in some sense of this word, and we happen to inhabit one. Just like Earth is a totally unremarkable planet in a totally unremarkable solar system in a totally unremarkable galaxy, except we popped up here so for a long time we thought t…
Quantum mechanics doesn't imply at all that everything possible is actual. That is a misconception. I do agree that it makes sense, but not because of what quantum mechanics says.
Yes, it doesn't imply, but parallel universes is one of possible interpretations.
Re: Research suggests Big Bang may have taken place inside a black hole
#524I have two problems / questions with this: 1. This theory requires a parent universe that can't have been formed inside a black hole. This means there must a be second "universe creation" mechanism that we can / may never know about from our child universe. For me, this doesn't really answer the true question: "How did our universe begin?" Yeah, it may the "unknown field with strange properties" but instead we get an…
1. It is possible that every universe is formed in a blackhole – an infinite universe-blackhole-universe chain. We don’t know what “infinity” means in this scenario, so we can’t simply rule it out. For comparison, Aristotle ruled out an infinite chain of causes, which we now know (with the help of hindsight, of course) is a flawed conclusion.
2. We don’t know whether our universe is big or small compared with other universes. We don’t know whether, or how, it makes sense to compare sizes between universes.
Big Bang is arguably the biggest speculation in modern science.
Re: Research suggests Big Bang may have taken place inside a black hole
#525I have two problems / questions with this: 1. This theory requires a parent universe that can't have been formed inside a black hole. This means there must a be second "universe creation" mechanism that we can / may never know about from our child universe. For me, this doesn't really answer the true question: "How did our universe begin?" Yeah, it may the "unknown field with strange properties" but instead we get an…
I don't see this idea as very new.
There are many models of black holes, such as the Schwarzchild solution, that have an area of "asymptotically flat spacetime" which is, from the viewpoint of our universe, part of the black hole. That something happens around the singularity that creates this new universe doesn't sound that crazy.
If our universe is a child of another universe and that is a child of another universe and so forth it fits into the kind of "multiverse" model that addresses issues such as "why does the universe have the parameters it does?" Either there are a huge amount of universes such that we're lucky to be in one we can live in, or there is some kind of natural selection such that universes that create more black holes have more children.
As for the relative size of the parent black hole, conservation of energy doesn't have to hold for universes in the normal sense. One idea is that the gravitational binding energy of the universe is equal to the opposite of all the mass in the universe such that it all adds up to zero so we could have more or less of it without violating anything.
Re: Research suggests Big Bang may have taken place inside a black hole
#526Earlier quoted context omitted.
I think it's unclear what kind of determinism you are presuming. Determinism in the universe? Determinism in consciousness? Certainly a deterministic machine can exist in a non-deterministic universe. However I didn't just assume a lack of free will. I also assumed a lack of identity . Do you realize that who you are is socially defined? When you breathe in, the air in the room around you becomes part of you. When yo…
Isn't identity exactly defined as what one perceives as part of oneself? Food becomes me as soon as I dis-member it to make it to be part of myself. Other food becomes you. This doesn't make food not within my sphere of perception a part of me; before digestion, it stays separate, like a virus doesn't become part of me -- the immune system acts a biological discriminator between what is part of me, and what is not. Y…
Seems like a long-winded way to say you suffer from anxiety.
> like a virus doesn't become part of me -- the immune system acts a biological discriminator between what is part of me, and what is not
But what about symbiotic organisms? What about your microbiome? Or the mitochondria, which began its existence as a separate organism? Or, they say our DNA includes many viruses that our ancestors contracted. A number of these things do stick with us and we sometimes even become totally dependent on them to function.
Re: Research suggests Big Bang may have taken place inside a black hole
#527Earlier quoted context omitted.
It's been several years and I'm not fresh enough to summarize it, but some time ago I read Carlo Rovelli's "The Order of Time" which is a pop science book on why that isn't true. Ymmv. I'm sure many reading this know more than I do about the topic.
Carlo Rovelli's book is idiosyncratic, it doesn't reflect scientific consensus on the matter.
Care to give a specific example?
Re: Research suggests Big Bang may have taken place inside a black hole
#528I have two problems / questions with this: 1. This theory requires a parent universe that can't have been formed inside a black hole. This means there must a be second "universe creation" mechanism that we can / may never know about from our child universe. For me, this doesn't really answer the true question: "How did our universe begin?" Yeah, it may the "unknown field with strange properties" but instead we get an…
> requires a parent universe Not exactly . A universe can expand, slow down, then collapse. In this case, bouncing back out. Does that repeat forever? Does it lose energy in the bounce? If so, to where and how? > The black hole in the parent universe must be much much bigger than anything we see in ours Yes and no. You're not thinking about contraction. With relativity we can fit a 100ft ladder inside a 10ft barn. Mo…
Where does the information of the previous universe before the bounce go? Is it destroyed?
Re: Research suggests Big Bang may have taken place inside a black hole
#529Earlier quoted context omitted.
I think the benefits greatly outweigh any dangers. I far prefer to read something like this than something written up by a journalist. > I acknowledge that not everyone involved in science has or wishes to acquire the skills needed to write blog-form content. They should. If your research is publicly funded you should make it as available to be public as possible. Academics should be able to communicate, and I very m…
>They should. If your research is publicly funded you should make it as available to be public as possible. Academics should be able to communicate, and I very much doubt they are unable to acquire the skills So in addition to being: -professional researchers -professional teachers -professional project managers -professional budget specialists -professional scientific writers -a failed idea away from losing it all T…
We have similar demands for folks in other professions. I know software engineers who are still coding day to day who also have to manage team budgets and track hours/projects, write patents, write blog posts to make the company look good, mentor juniors, sometimes teach internally or even to external audiences, present at conferences, etc.
Re: Research suggests Big Bang may have taken place inside a black hole
#530Earlier quoted context omitted.
Too bad the author didn’t explain more the concept of the “parent” universe and how our own (contracting & expanding) universe got created. Nice things to read/consider/ponder late at night :-)
Unfortunately, it appears that the universe does not care very much about human satisfaction. Fortunately, other humans do.
What makes you say that? This feels like a very convenient planet.