On 18 Nov 2008, at 15:03, A. Wolf wrote:

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> > Even if you could discretize the universe to a countable submodel > (and I'm > not certain you can), each step of the computation would take > forever (each > step is ordered by omega the way the stones are laid out). An > infinite > amount of time bounded by discrete steps isn't enough time to > complete more > than one step, based on the way the description is given. i am not sure I understand. Are you thinking that the hero is in its own simulation? We could imagine that the Theory of Everything is given by a Schroedinger-Dirac like equation applied to the quantum vacuum. Then we can interpret the work of the hero as a dovetailing on the solutions of that equation. It would build a quantum multiverse. Yet, that cannot work. And Telmo gave the reason. If we are machine (and we are machine if the hero's emulator can start), then physics is a sum on a continuum of computational histories, and nobody can write a program simulating that. Only a person, being generated almost everywhere omega times, in the deployment can "live" that, from inside. (for some others: omega is aleph_0, the continuum = 2^aleph_0). Bruno > > > So that's one error. You could correct it by changing the order in > which > the stones are laid out, but it will still only work for universes > in which > space and time are quantized in a mathematically problematic way. > > Anna > > > ----- Original Message ----- > From: "Bruno Marchal" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, November 18, 2008 6:23 AM > Subject: Little exercise > > >> Hi, >> >> A joke could hardly been wrong, yet, if taken seriously enough, a >> joke >> could be made more correct! (and probably less funny, but that's not >> the point). >> >> How would you make "correct" the joke here: >> >> http://xkcd.com/505/ >> >> Hint: step 7 >> >> This question is addressed mainly to Jason and Kory, who, it seems to >> me, have still a little problem with step 7, if I may say, >> >> Bruno >> >> http://iridia.ulb.ac.be/~marchal/ >> >>> >> > > > > 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 -~----------~----~----~----~------~----~------~--~---