Tyrrell_McAllister comments on Notion of Preference in Ambient Control - Less Wrong

14 Post author: Vladimir_Nesov 07 October 2010 09:21PM

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Comment author: Will_Sawin 08 October 2010 01:23:27AM 0 points [-]

Some axioms are definitions.

Previous theorem: All unmarried men are not married New definition: "Bachelor" means "unmarried man" New theorem: All bachelors are unmarried men.

I'm pretty sure that's what he means. Hopefully clarified, if not made perfectly in accord with standard definitions.

Comment author: Tyrrell_McAllister 08 October 2010 03:21:44AM 1 point [-]

I'm pretty sure that's what he means.

I think that he means something analogous to the way that we can add some axioms involving the symbol "+" to the Peano axioms, and then show in second-order logic that the new axioms define addition uniquely.