On 16 Jan 2011, at 22:27, Evgenii Rudnyi wrote:

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Thanks for the answer. My question was due to the fact that comppresumably can simulate more than we observe. Let me check if I haveunderstood your answer correctly. I will cite a paragraph from my texthttp://blog.rudnyi.ru/2010/12/entropy-and-artificial-life.htmlWe bring a glass of hot water in the room and leave it there.Eventually the temperature of the water will be equal to the ambienttemperature. In classical thermodynamics, this process is consideredas irreversible, that is, the Second Law forbids that thetemperature in the glass will be hot again spontaneously. It is incomplete agreement with our experience, so one would expect the samefrom statistical mechanics. However there the entropy has somestatistical meaning and there is a nonzero chance that the waterwill be hot again. Moreover, there is a theorem (PoincarĂ©recurrence) that states that if we wait long enough then thetemperature of the glass must be hot again. No doubt, the chancesare very small and time to wait is very long, in a way this isnegligible. Some people are happy with such statistical explanation,some not.Have you meant that the Universal Dovetailer will act for such asituation according to PoincarĂ© recurrence?

`The UD will do that an infinity of times, given that the PoincarĂ©`

`recurrence is a computable process. But the physical laws are sum on`

`first person views, based on a continuum of histories, so to relate`

`thermodynamic to the UD is certainly not obvious at all. The UD is`

`just a way to provide the minimal third person ontology (the`

`'everything') needed when we assume mechanism, and its role is to`

`build a mathematical formulation of the mind-body problem (if only to`

`illustrate that science has not yet choose between Plato and Aristotle).`

Bruno

on 16.01.2011 17:50 Bruno Marchal said the following:You can simulate it. But you cannot program it. It uses a huge amount of information that it is hard to extract from the environment. I would say. In a larger sense, in which we are ourself Maxwell demon, you can filter it from long computation. They will transform selective information into energy. they will economize. The Universal Dovetailer does generate all possible Maxwell daemons, but I guess they are typically distributed sparsely in the set of all computations. Quantum Maxwell demon? That might explains the origin of life, but that might be a too cheap explanation. I should revised quantum information theory, but I have already hardly the time to do the real thing, which is to extract the quantum information from classical information + self-duplication and other self-perturbation (or to convince others to do the work, or that such a work has to be done to get both the qualia and the quanta). Interesting but hard question. Bruno On 15 Jan 2011, at 18:22, Evgenii Rudnyi wrote:I am trying to understand what the hypothesis comp is about. It would be interesting to understand whether the Maxwell demon could be simulated or not. Any idea? Evgenii -- You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to everything-list@googlegroups.com. To unsubscribe from this group, send email to everything-list+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.http://iridia.ulb.ac.be/~marchal/--You received this message because you are subscribed to the GoogleGroups "Everything List" group.To post to this group, send email to everything-list@googlegroups.com.To unsubscribe from this group, send email to everything-list+unsubscr...@googlegroups.com.For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.

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