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nazgulnarsil3 comments on Can't Unbirth a Child - Less Wrong

23 Post author: Eliezer_Yudkowsky 28 December 2008 05:00PM

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Comment author: nazgulnarsil3 28 December 2008 08:18:39PM 1 point [-]

Actually it sounds pretty unlikely to me, considering the laws of thermodynamics as far as I know them.

you can make entropy run in reverse in one area as long as a compensating amount of entropy is generated somewhere within the system. what do you think a refrigerator is? what if the extra entropy that needs to be generated in order to rewind is shunted off to some distant corner of the universe that doesn't affect the area you are worried about? I'm not talking about literally making time go in reverse. You can achieve what is functionally the same thing by reversing all the atomic reactions within a volume and shunting the entropy generated by the energy you used to do this to some other area.