Le 21-oct.-07, à 20:33, Rolf Nelson a écrit :
> > (Warning: This post assumes an familiarity with UD+ASSA and with the > cosmological Measure Problem.) I am afraid you should say a little more on UD + ASSA. to make your points below clearer. I guess by UD you mean UDist (the universal distribution), but your remark remains a bit to fuzzy (at least for me) to comment. Of course I am not convinced by ASSA at the start, but still. The absence of recation of ASSA defenders is perhaps a symptom that you are not completely clear for them too? Bruno > > Observational Consequences: > > 1. Provides a possible explanation for the "Measure Problem" of why we > shouldn't be "extremely surprised" to find we live in a lawful > universe, rather than an extremely chaotic universe, or a homogeneous > cloud of gas. > > 2. May help solve the Doomsday Argument in a finite universe, since > you probably have at least a little more "measure" than a typical > specific individual in the middle of a Galactic Empire, since you are > "easier to find" with a small search algorithm than someone surrounded > by enormous numbers of people. > > 3. For similar reasons, may help solve a variant of the Doomsday > Argument where the universe is infinite. This variant DA asks, "if > there's currently a Galactic Empire 10000 Hubble Volumes away with an > immensely large number of people, why wasn't I born there instead of > here?" > > 4. May help solve the Simulation Argument, again because a search > algorithm to find a particular simulation among all the adjacent > computations in a Galactic Empire is longer (and therefore, by UD > +ASSA, has less measure) than a search algorithm to find you. > > 5. In basic UD+ASSA (on a typical Turing Machine), there is a probably > a strict linear ordering corresponding to when the events at each > point in spacetime were calculated; I would argue that we should > expect to see evidence of this in our observations if basic UD+ASSA is > true. However, we do not see any total ordering in the physical > Universe; quite the reverse: we see a homogeneous, isotropic Universe. > This is evidence (but not proof) that either UD+ASSA is completely > wrong, or that if UD+ASSA is true, then it's run on something other > than a typical linear Turing Machine. (However, if you still want use > a different machine to solve the "Measure Problem", then feel free, > but you first need to show that your non-Turing-machine variant still > solves the "Measure Problem.") > > > Decision Theory Consequences (Including Moral Consequences): > > Every decision algorithm that I've ever seen is prey to paradoxes > where the decision theory either crashes (fails to produce a > decision), or requires an agent to do things that are bizarre, self- > destructive, and evil. (If you like, substitute 'counter-intuitive' > for 'bizarre, self-destructive, and evil.') For example: UD+ASSA, > "Accepting the Simulation Argument", Utilitarianism without > discounting, and Utilitarianism with time and space discounting all > have places where they seem to fail. > > UD+ASSA, like the Simulation Argument, has the following additional > problem: while some forms of Utilitarianism may only fail in > hypothetical future situations (by which point maybe we'll have come > up with a better theory), UD+ASSA seems to fail *right here and now*. > That is, UD+ASSA, like the Simulation Argument, seems to call on you > to do bizarre, self-destructive, and evil things today. An example > that Yudowsky gave: you might spend resources on constructing a unique > arrow pointing at yourself, in order to increase your measure by > making it easier for a search algorithm to find you. > > Of course, I could solve the problem by deciding that I'd rather be > self-destructive and evil than be inconsistent; then I could consider > adopting UD+ASSA as a philosophy. But I think I'll pass on that > option. :-) > > So, more work would have to be done the morality of UD+ASSA before any > variant of UD+ASSA can becomes a realistically palatable part of a > moral philosophy. > > -Rolf > > > > > http://iridia.ulb.ac.be/~marchal/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to [EMAIL PROTECTED] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/everything-list?hl=en -~----------~----~----~----~------~----~------~--~---
