Re: Law without law: from observer states to physics via algorithmic information theory
I will never get this bother about "consistency" or "objectivity" in QM as a probabilist. In [ Hilbert Spaces from Path Integrals - https://arxiv.org/pdf/1002.0589.pdf ] section *2 *restates a type of probability space that models QM. Nothing more really needs to be said about QM - at the "micro" level of QM (unless there is some new data that adds to or conflicts with QM observations). QM itself perfectly fine. The problem is (apparently) in getting it to work with gravity. (And for some, the so-called "measurement" problem.) @philipthrift On Saturday, January 11, 2020 at 10:53:36 AM UTC-6, Lawrence Crowell wrote: > > It is the case that objectivity or the existence of an ontological reality > is uncertain. With the Frauscher-Renner result it is also uncertain to what > extent quantum mechanics is epistemological. Even measurements do not yield > a consistent result between all possible observers. So what is known by > Alice may not agree with what is known by Bob. QM is then a system that > does not under all circumstances yield results or answers that are > completely consistent within itself. > > LC > > On Saturday, January 11, 2020 at 4:08:54 AM UTC-6, Philip Thrift wrote: >> >> >> >> >> >> it predicts that it appears to observers as if there was an external >> world that evolves according to simple, computable, probabilistic laws. In >> contrast to the standard view, objective reality is not assumed >> >> OK. :) >> >> @philipthrift >> >> >> >> On Saturday, January 11, 2020 at 3:36:51 AM UTC-6, Evgenii Rudnyi wrote: >>> >>> "According to our current conception of physics, any valid physical >>> theory is supposed to describe the objective evolution of a unique external >>> world. However, this condition is challenged by quantum theory, which >>> suggests that physical systems should not always be understood as having >>> objective properties which are simply revealed by measurement. Furthermore, >>> as argued below, several other conceptual puzzles in the foundations of >>> physics and related fields point to limitations of our current perspective >>> and motivate the exploration of an alternative: to start with the >>> first-person (the observer) rather than the third-person perspective (the >>> world). In this work, I propose a rigorous approach of this kind on the >>> basis of algorithmic information theory. It is based on a single postulate: >>> that universal induction determines the chances of what any observer sees >>> next. That is, instead of a world or physical laws, it is the local state >>> of the observer alone that determines those probabilities. Surprisingly, >>> despite its solipsistic foundation, I show that the resulting theory >>> recovers many features of our established physical worldview: it predicts >>> that it appears to observers as if there was an external world that evolves >>> according to simple, computable, probabilistic laws. In contrast to the >>> standard view, objective reality is not assumed on this approach but rather >>> provably emerges as an asymptotic statistical phenomenon. The resulting >>> theory dissolves puzzles like cosmology's Boltzmann brain problem, makes >>> concrete predictions for thought experiments like the computer simulation >>> of agents, and suggests novel phenomena such as "probabilistic zombies" >>> governed by observer-dependent probabilistic chances. It also predicts some >>> basic phenomena of quantum theory (Bell inequality violation and >>> no-signalling) and suggests a novel "algorithmic" perspective on the >>> foundations of quantum mechanics." >>> >>> https://arxiv.org/abs/1712.01826 >>> >> -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/bbe24a68-6c25-4cad-82ae-c3de887166a3%40googlegroups.com.
Re: Law without law: from observer states to physics via algorithmic information theory
It is the case that objectivity or the existence of an ontological reality is uncertain. With the Frauscher-Renner result it is also uncertain to what extent quantum mechanics is epistemological. Even measurements do not yield a consistent result between all possible observers. So what is known by Alice may not agree with what is known by Bob. QM is then a system that does not under all circumstances yield results or answers that are completely consistent within itself. LC On Saturday, January 11, 2020 at 4:08:54 AM UTC-6, Philip Thrift wrote: > > > > > > it predicts that it appears to observers as if there was an external world > that evolves according to simple, computable, probabilistic laws. In > contrast to the standard view, objective reality is not assumed > > OK. :) > > @philipthrift > > > > On Saturday, January 11, 2020 at 3:36:51 AM UTC-6, Evgenii Rudnyi wrote: >> >> "According to our current conception of physics, any valid physical >> theory is supposed to describe the objective evolution of a unique external >> world. However, this condition is challenged by quantum theory, which >> suggests that physical systems should not always be understood as having >> objective properties which are simply revealed by measurement. Furthermore, >> as argued below, several other conceptual puzzles in the foundations of >> physics and related fields point to limitations of our current perspective >> and motivate the exploration of an alternative: to start with the >> first-person (the observer) rather than the third-person perspective (the >> world). In this work, I propose a rigorous approach of this kind on the >> basis of algorithmic information theory. It is based on a single postulate: >> that universal induction determines the chances of what any observer sees >> next. That is, instead of a world or physical laws, it is the local state >> of the observer alone that determines those probabilities. Surprisingly, >> despite its solipsistic foundation, I show that the resulting theory >> recovers many features of our established physical worldview: it predicts >> that it appears to observers as if there was an external world that evolves >> according to simple, computable, probabilistic laws. In contrast to the >> standard view, objective reality is not assumed on this approach but rather >> provably emerges as an asymptotic statistical phenomenon. The resulting >> theory dissolves puzzles like cosmology's Boltzmann brain problem, makes >> concrete predictions for thought experiments like the computer simulation >> of agents, and suggests novel phenomena such as "probabilistic zombies" >> governed by observer-dependent probabilistic chances. It also predicts some >> basic phenomena of quantum theory (Bell inequality violation and >> no-signalling) and suggests a novel "algorithmic" perspective on the >> foundations of quantum mechanics." >> >> https://arxiv.org/abs/1712.01826 >> > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/df7ecf6a-c9af-453e-9aca-6c0e76de7834%40googlegroups.com.
Re: Law without law: from observer states to physics via algorithmic information theory
it predicts that it appears to observers as if there was an external world that evolves according to simple, computable, probabilistic laws. In contrast to the standard view, objective reality is not assumed OK. :) @philipthrift On Saturday, January 11, 2020 at 3:36:51 AM UTC-6, Evgenii Rudnyi wrote: > > "According to our current conception of physics, any valid physical theory > is supposed to describe the objective evolution of a unique external world. > However, this condition is challenged by quantum theory, which suggests > that physical systems should not always be understood as having objective > properties which are simply revealed by measurement. Furthermore, as argued > below, several other conceptual puzzles in the foundations of physics and > related fields point to limitations of our current perspective and motivate > the exploration of an alternative: to start with the first-person (the > observer) rather than the third-person perspective (the world). In this > work, I propose a rigorous approach of this kind on the basis of > algorithmic information theory. It is based on a single postulate: that > universal induction determines the chances of what any observer sees next. > That is, instead of a world or physical laws, it is the local state of the > observer alone that determines those probabilities. Surprisingly, despite > its solipsistic foundation, I show that the resulting theory recovers many > features of our established physical worldview: it predicts that it appears > to observers as if there was an external world that evolves according to > simple, computable, probabilistic laws. In contrast to the standard view, > objective reality is not assumed on this approach but rather provably > emerges as an asymptotic statistical phenomenon. The resulting theory > dissolves puzzles like cosmology's Boltzmann brain problem, makes concrete > predictions for thought experiments like the computer simulation of agents, > and suggests novel phenomena such as "probabilistic zombies" governed by > observer-dependent probabilistic chances. It also predicts some basic > phenomena of quantum theory (Bell inequality violation and no-signalling) > and suggests a novel "algorithmic" perspective on the foundations of > quantum mechanics." > > https://arxiv.org/abs/1712.01826 > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/c2bed076-17a1-4681-b179-647d362b3d4e%40googlegroups.com.
