Cyan2 comments on Possibility and Could-ness - Less Wrong

34 Post author: Eliezer_Yudkowsky 14 June 2008 04:38AM

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Comment author: Cyan2 20 June 2008 01:38:00AM 0 points [-]

Joseph Knecht, Brandon put "realizability" in the territory, whereas Eliezer put "reachability" in the map. Compare and contrast:

Brandon: When we speak of "could" we speak of the set of realizable worlds [A'] that follows from an initial starting world A operated on by a set of physical laws f.

Eliezer: We've previously discussed how probability is in the mind... possibility is also in the mind.

It is not the case that Eliezer is criticizing Brandon for the same mistake that Eliezer made himself.