Unknowns comments on Green Emeralds, Grue Diamonds - Less Wrong

8 Post author: Stuart_Armstrong 06 July 2015 11:27AM

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Comment author: Unknowns 06 July 2015 01:19:02PM 5 points [-]

Excellent post. Basically simpler hypotheses are on average more probable than more complex ones, no matter how complexity is defined, as long as there is a minimum complexity and no maximum complexity. But some measures of simplicity are more useful than others, and this is determined by the world we live in; thus we learn by experience that mathematical simplicity is a better measure than "number of words it takes to describe the hypothesis," even though both would work to some extent.

Comment author: MrMind 07 July 2015 09:36:20AM -1 points [-]

Ah, I see now that we said almost the same thing.

Basically simpler hypotheses are on average more probable than more complex ones, no matter how complexity is defined, as long as there is a minimum complexity and no maximum complexity

Which is the basic receipt of Solomonoff induction!

But some measures of simplicity are more useful than others, and this is determined by the world we live in

I would only say here that simplicity is determined by the agent evaluating it, and while most agent are determined by the world that they live in, some might not.