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Wolfram On Hunting For Our Universe

blog.wolfram.com

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Re: Wolfram On Hunting For Our Universe

#3
Why should it be this network thing? He doesn't back up his assertion that the universe is described by one of these networks.

Juergen Schmidhuber lays out an interesting idea that our Universe is just one Turing machine, generated by an enumeration of all Turing machines (generating all possible Universes). http://www.idsia.ch/~juergen/everything/html.html

Re: Wolfram On Hunting For Our Universe

#5
post #3

Why should it be this network thing? He doesn't back up his assertion that the universe is described by one of these networks. Juergen Schmidhuber lays out an interesting idea that our Universe is just one Turing machine, generated by an enumeration of all Turing machines (generating all possible Universes). http://www.idsia.ch/~juergen/everything/html.html

The difference is that Wolfram wants an actual, single correct model in his hands, whereas Juergen is just talking about hypothetical computations that theoretically produce our universe as well as all the rest (with no hope of being discovered by us humans)

Effectively Wolfram is pruning the search space by looking for the simplest rules that he thinks have a shot of reproducing known physical features of the universe (eg special and general relativity, with a plan for how QM may come about), and then looking within that space for the specific flavor that is our universe. If you actually want to find the model via searching programs, this is the only realistic way to do it.

Re: Wolfram On Hunting For Our Universe

#6
post #3

Why should it be this network thing? He doesn't back up his assertion that the universe is described by one of these networks. Juergen Schmidhuber lays out an interesting idea that our Universe is just one Turing machine, generated by an enumeration of all Turing machines (generating all possible Universes). http://www.idsia.ch/~juergen/everything/html.html

"But I suspect it's really more integrated: that everything is "just space", with the particles being something like special little lumps of connectivity in the network corresponding to space."

He's not saying it's definitely a network, he's just saying that he's going to start looking there because it intuitively makes sense. This seems reasonable for a few reasons. First, networks are the most advanced form of organization we currently know of. Second, it potentially provides a very simple explanation for many things, such as gravity. Third, the idea that matter is just really concentrated nothingness is just too cool not to look at. And it sort of makes sense if you believe in zero-point energy, which supposedly both general relativity and quantum mechanics predict (according to the free energy nuts).

/not a theoretical physicist

Re: Wolfram On Hunting For Our Universe

#8
post #2

You might find this review of Wolfram's book interesting: http://www.scottaaronson.com/papers/nks.pdf

When the book first came out, I remember there was an air of skepticism surrounding some of its concepts. Has the view towards the book by the science community changed much in the years since? I'm not a physicist, but have always been interested in Wolfram's work out of curiosity from a comp sci perspective.

Re: Wolfram On Hunting For Our Universe

#10
post #9
post #7

How can this guy STILL be that full of himself even after all the shit he took for writing A New Kind of Science?

The book has quite a few citations: http://scholar.google.com/scholar?hl=en&lr=&cites=31...

It also had a quite a large marketing campaign behind it.

Last I checked most objective scientific writing didn't come with a hype machine attached.

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