Talk:Laplace's demon
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[edit] Query
Why is Laplace's demon based on the premise of reversibility?
If the demon knows that a->b and c->d, and there are 100 a and 100 c, it can thus predict there will be 100 b and 100 d eventually.
I don't know anything of Laplace's demon besides this Wikipedia entry, but I simply didn't understand it so if someone knows the answer, please add to the article :) 19:06, 14 October 2006 User:82.168.228.248 (Talk)
I deleted a section entitled Simplistic Downfall that claimed to be an encapsulation of the paragraph "The downfall of Laplace Demon". It was in fact not an encapsulation of that graf (which focuses on philosophical and information theory concerns, and was to my eyes either grossly incorrect or gave a ridiculously superficial treatment of a highly complex section of the foundational issues of QM.
Robert Ulanowicz's claim that Laplace's Demon is invalidated by the second law of thermodynamics is incorrect to my eyes. Thermodynamics doesnt have anything to do with it, since it is based on the average over many particle states owing to a lack of information on microscopic states. The microscopic states (to which the demon has by assumption has complete knowledge) are still governed by reversible laws, (measurement process in copenhagen QM excluded). I'm therefore demoting it and putting a note questioning its validity.
QuantumSage 06:10, 7 February 2007 (UTC)
[edit] in pop culture
This would be the same concept as the precognition of the dune series wouldn't it. Could someone who understands both better put somthing in about it.71.112.27.85 06:15, 7 April 2007 (UTC) Effilcdar
[edit] chaos
Should some mention of chaos theory be made and how that is integral to the problems with such awareness. 71.112.27.85 06:15, 7 April 2007 (UTC) Effilcdar
[edit] quantum m
Should mention be made in this article of hizenberg's uncertenty principal. Acordning to it alone such a demon qould be imposible in that it couldn't predict the location of even a single electron. 71.112.27.85 06:15, 7 April 2007 (UTC) Effilcdar
