Those of us who know Max Tegmark as a mainstream perfectionist researcher who deals with real cold cosmological data will be amused by his work
Hep-th
On hep-th, Kallosh and Linde are testing string theory with the CMB. Green, Ooguri, and Schwarz argue that one can't decouple supergravity from string theory in dimensions higher than three and N=8 supergravity probably belongs to the swampland - very much the same arguments we explained at the end of Finiteness of SUGRA.
snail feedback (4) :
Very interesting stuff.
Is this guy a former student of Seth Lloyd, the guy with "Computational Universe"?
In my opinion, we might be living in a matrix, but we will NEVER be able to determine whether our reality world is a matrix or not. The important thing to note is that our universe is finite, with a finite amount of entropy. That means it can be fully described by a finite number of digits. Those digits could be written onto a book, saved into a computer chip, or stored in a giant quantum computer. You never know.
For example, the whole universe we saw, might just be a giant TV screen some intelligent ET life set up, enclosing our whole solar system, projecting various photons our way emulating what a universe should look like according to certain theoretical model. Making every thing look so real. Such a giant TV screen would be incredibly complicated. But the complexity would be finite, not infinite. And any thing with finite complexity is conceiveable by a super intelligent being. We would not be able to tell whether such a giant TV screen exists or not until we send a spaceship actually check it out.
Of course that's quite a stretch of imagination. But mathematically you can not say it is impossible.
I tried to leave this link to a conversation about the MUT I tried to strike up at Google groups on sci.logic.
The link was way too long, let me try this:
A MUT discussion.
When would we be justified in claiming to have a rational explanation for existence?
What we really want is a particular structure that has a unique claim to existence.
There is an attempt to find one at http://www.towardsrationalexplanationexistence.blogspot.com/
Post a Comment