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MDM
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08 Sep 2010, 9:15 pm

ruveyn wrote:
MDM wrote:
Couldn't have been that, since possible communication with gravitons would be most likely with other 3rd dimensional universes, or 4th dimensional beings. If I find the source, I'll post it.


First find a graviton. No one has yet.

ruveyn


Point taken : P



Jono
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09 Sep 2010, 1:59 pm

ruveyn wrote:
MDM wrote:
Couldn't have been that, since possible communication with gravitons would be most likely with other 3rd dimensional universes, or 4th dimensional beings. If I find the source, I'll post it.


First find a graviton. No one has yet.

ruveyn


That would be something difficult to do because of the weakness of gravity wit respect to the other interactions. Unless, of course, there are large extra dimensions like what has been proposed in some string theory models, in which case they could be detected in the Large Hadron Collider.



ruveyn
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09 Sep 2010, 6:18 pm

Jono wrote:
ruveyn wrote:
MDM wrote:
Couldn't have been that, since possible communication with gravitons would be most likely with other 3rd dimensional universes, or 4th dimensional beings. If I find the source, I'll post it.


First find a graviton. No one has yet.

ruveyn


That would be something difficult to do because of the weakness of gravity wit respect to the other interactions. Unless, of course, there are large extra dimensions like what has been proposed in some string theory models, in which case they could be detected in the Large Hadron Collider.


There are two problems with quantum gravitation:

1. No one has yet detected a graviton

2. All of the quantum gravitation theories have renormalization problems.

Which is why string theory is such an attractive thing. It can reproduce a quantum theory of gravitation without the infinities. It does not need to be renormalized. BUT there are 10^500 possible string theories and no empirical way to find the one that its the facts. String theory predicts too much and is, in a practical sense, untestable.

ruveyn



Othila
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21 Sep 2010, 3:05 am

Haven't read the book but just like I don't mix my soda with my booze so too I don't mix religion with science. Maybe Hawkings is just sick of people coming up to him and saying God created the universe. What does it matter to Hawking's research? He isn't studying God. Yes it's probably arrogant but it would be even more arrogant to say that the universe was designed for us by a creator. It's a lose lose situation.



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21 Sep 2010, 11:03 am

Othila wrote:
Haven't read the book but just like I don't mix my soda with my booze so too I don't mix religion with science. Maybe Hawkings is just sick of people coming up to him and saying God created the universe. What does it matter to Hawking's research? He isn't studying God. Yes it's probably arrogant but it would be even more arrogant to say that the universe was designed for us by a creator. It's a lose lose situation.


Hawking never actually gave a position on whether or not God exists. He's just saying that God's existance isn't necessary for our existance and his new book explores the latest ideas and theories, like eternal inflation, string theory/M-theory, the multiverse hypothesis etc. The whole issue is about Hawking's new book.