Gunnar_Zarncke comments on What resources have increasing marginal utility? - Less Wrong

36 Post author: Qiaochu_Yuan 14 June 2014 03:43AM

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Comment author: Gunnar_Zarncke 15 June 2014 07:45:12AM 7 points [-]

100% positive on Amazon isn't the same as the 100% trust mean. 100% on amazon really is just a bit higher the 99%. 100% trust can't be expressed by Amazon ratings as the the underlying rating can still be hacked or 'optimized'.

Comment author: Qiaochu_Yuan 16 June 2014 04:22:05AM 0 points [-]

Agreed. The mapping from Amazon ratings to actual trustworthiness is pretty nonlinear.

Comment author: Gunnar_Zarncke 16 June 2014 07:13:03AM 0 points [-]

Nonlinearity alone wouldn't be a problem. The problem is that the mapping isn't injective.

Comment author: Dr_Manhattan 16 June 2014 07:06:19PM 2 points [-]

For Less Mathy Humans(tm) "100% trust between humans is not expressible by any Amazon rating" (I think)

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