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Chris Knight, the finest fictional physicist of our time, once said "All science. No Philosophy. Wrong." It's true that an understanding of existence outside of equations is vital for scientists, both in terms of enjoying life and avoiding things like Agent Orange, but beware careless combination of the two. A science/philosophy mixture can lead to metaphysical claims that the laws of physics are nothing but local zoning ordinances, as demonstrated by Lee Smolin.
Smolin is author of "the fecund universes theory" of cosmology which suggests that the rules of biology apply on the grandest scales, and is often referred to as "cosmological natural selection". Smolin summarized the idea in his book, The Life of the Cosmos.
The theory surmises that a collapsing black hole causes the emergence of a new universe on the "other side", whose fundamental constant parameters (speed of light, Planck length and so forth) may differ slightly from those of the universe where the black hole collapsed. Each universe therefore gives rise to as many new universes as it has black holes.
Don't know if I would necessarily say "portals" but maybe a link
that we can not cross?
But who is to say that the black hole is not a "big bang" for another universe?
Originally posted by nerbot
I think before you could say that our laws of physics are "unique to our universe", you would have to prove that there are other universes...hmmmm
And black holes creating a "big bang" for another universe...well, black holes last a bit longer than the split second it takes for a big bang scenario. What does all the other matter that gets sucked into a black hole do the rest of the time. or does the black hole disappear at the moment of the bang?
Aaaaah shoot! now my head hurts.
I don't really mean contact, maybe like a window
the matter that is being sucked in would have to go somewhere right?
The holographic principle is a property of quantum gravity and string theories which states that the description of a volume of space can be thought of as encoded on a boundary to the region—preferably a light-like boundary like a gravitational horizon. First proposed by Gerard 't Hooft, it was given a precise string-theory interpretation by Leonard Susskind.
In a larger and more speculative sense, the theory suggests that the entire universe can be seen as a two-dimensional information structure "painted" on the cosmological horizon, such that the three dimensions we observe are only an effective description at macroscopic scales and at low energies. Cosmological holography has not been made mathematically precise, partly because the cosmological horizon has a finite area and grows with time.
Originally posted by Maslo
Also, if our universe is just one out of many, it would explain why laws of physic and basic constants seems to be so fine-tuned via anthropic principle:
"We are here asking why are laws of physic so fine-tuned, because if they werent, there would be no one asking these questions in the first place."
If we really live on a black hole, this could explain why our universe seemingly went through a phase of rapid inflation after in was born (this is when the event horizon was created - gravitational collapse), and also why it is continouing in this inflation, even accelerating (our black hole is still accreting matter).
Originally posted by Bicent76
wow lotsa smart idea's I feel like the little fish in the barrel.
we define physics as measurements of space time motion etc. etc.
its how we read reality. I think it is unique to this reality, this reality as in space universes all that we can perceive looking up or down.
Yet past that taking your head outta the hood of the car, is where physics fails to comprehend.
Originally posted by LordBucket
If you want to suggest that our version of physics is a purely local phenomenon, that seems plausible to me. But I don't easily leap from that idea to the notion of black holes as "portals to somewhere else." An idea I suspect may have been inspired by the Disney movie.