[EM] There's nothing wrong with Average Rating.

[Richard Moore]

Ken Johnson wrote:
> So is it correct to say that Arrow did not prove that "there is no 
> perfect voting system"; he only proved that the methods he deems to be 
> acceptable are imperfect?
>  
> Ken Johnson

I would think that "perfect" and "imperfect" (in this context) are 
value judgements.

Theorems are facts, not judgements, so it is incorrect to state that 
Arrow proved anything about a value judgement.

  -- Richard