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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: koan who wrote (775472)	3/18/2014 3:38:38 PM
From: i-node	Read Replies (1) \| Respond to of 1578966

Just skimming the article I see nothing that would suggest your notion that we're all computer generated virtual people walking about inside a computer generated virtual world.

To: koan who wrote (775472)	3/18/2014 3:44:29 PM
From: TideGlider	Read Replies (1) \| Respond to of 1578966

which course does he teach? offices.northwestern.edu

To: koan who wrote (775472)	3/18/2014 3:48:50 PM
From: Taro	Read Replies (2) \| Respond to of 1578966

Yes, multiple universes connected via black holes and pulsars, right? Next...

To: koan who wrote (775472)	3/18/2014 6:37:55 PM
From: combjelly	Read Replies (2) \| Respond to of 1578966

So he just sent me the below. I have no idea the relevance between gravity waves and a multiverse. No direct link, per se. Here is some current thoughts on the subject. That discovery provides support for two things. One, the hyperinflation of the early big bang period. The second is that it proves that gravity waves actually exist. Assuming it stands up, of course. Gravity waves are the last major aspect of Einstein's general relativity that hasn't been observed until now. And that brings us to the cosmological constant that Einstein inserted into general relativity. He put it in there because the general viewpoint was that the universe is infinite and had no beginning. However, according to Einstein's work, the universe should have collapsed in on itself due to gravity long before we wandered on the scene. So he created a small repulsive force that balanced things out. It bothered him, though. So he later removed it. In the 1990s, we discovered he was a little hasty. That was when we observed that not only is the universe expanding, it is expanding at an increasing rate. We dubbed this "dark energy". The value of which is very close to the cosmological constant. Einstein's mistake was in thinking he had made a mistake... Ok, how does this tie into things? Well, there are some theories that hold that "dark energy" is a very small extra dimension, it is sort of curled up on itself. It manifests itself on a macroscale by acting as a repulsive force on matter that increases as the distance increases. So it doesn't work on a human scale. Or a planetary scale. Not on a galactic scale or even a galactic cluster scale. But, between galactic clusters and larger structures, it does. Now it seems likely that the amount of the repulsion is a function of its shape. And that is set at the time of creation, like other cosmological constants like Planck's constant. As it turns out, the possible shapes of that "dark energy" dimension is very large, maybe even infinite, each of which could exist in another universe. At least that is how it was explained to me. I still am trying to figure out exactly why that might be the case, but... The connection here, as I understand it, is this observation gives a lot less wiggly room that general relativity might be wrong in certain important aspects. And that means that "dark energy" is more likely to exist and isn't just some flaw in general relativity. And the multiverse is an extension of that. Which is why your son in-law said this is big. Assuming it stands up, it gives insight into some very fundamental parts of how our universe operates.