On 12 Nov 2014, at 07:58, LizR wrote:

On 12 November 2014 15:42, John Clark <[email protected]> wrote:
On Mon, Nov 10, 2014  LizR <[email protected]> wrote:

> Physical processes obey the laws of physics. The 2nd law isn't a law of physics.

The 2nd law is even more fundamental than a law of physics, it's more like a law of logic; it's just the result of there being VASTLY more ways to be disorganized (high entropy) than organized (low entropy). So however a physical law changes a system, when it is done with it the system will almost certainly be in a higher entropy state than it was before the changes happened.

Correct. The 2nd law is simply the result of statistics - a "law of logic" as you say.

Well, just a detail, which matters for a logician; Logic is not enough, you need the numbers, and addition + mutiplication, and this entails already the comp multiverse (the UD*). The whole non triviality of reality comes from the Turing universaility that we get when having both + and * laws operating together.




It should operate in (hypothetical) universes with all sorts of physical laws - however, for it to do so you need a mechanism that initialises the universe in a low entropy state, or a mechanism that keeps raising the maximum entropy a system can attain (I - and others - have suggested that the expansion of the universe is just such a mechanism).

Hmm... For a many-worlder, we need only the 0-information (or near zero) describing the superposition of the vacuum state. It is the opposite in the de Broglie/ Bohm initial state, which needs a priori to be a very-high information state, to enforce (non covariantly) the particles to exist in only one term of the wave, in some chosen base. With computationalism or the MW, the space-time structure is relative to the observers views from inside, like UDA explains it has to be, if computationalism is correct. Now, if computationalism is correct, the wave itself arises phenomenologically, plausibly under the form of a (measure winning) quantum universal dovetailer (which the wave of the vacuum might be). We have already the quantum logic for the sigma_1 "foliation" in the UD, when seen by self-referentially correct machines. Advantage? Consciousness is no more eliminated, (thanks to the Solovay splitting) and corresponds to the first person discourses of the self-aware creatures.

Bruno






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