Plasmon comments on How should Eliezer and Nick's extra $20 be split - Less Wrong

9 Post author: Coscott 14 June 2013 06:14PM

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Comment author: Plasmon 15 June 2013 12:52:21PM 2 points [-]

EY believes he deserves the money with probability p.

NB believes he deserves the money with probability q.

The following rules would, I think, be considered fair by most people:

  • If p=q, f(p,q) should be 1/2.

  • If p=0, f(p,q) should be 0 (EY gets nothing).

  • If q=0, f(p,q) should be 1 (EY gets everything).

The simplest rational function obeying these conditions is f(p,q) = p/(p+q)

Comment author: Larks 15 June 2013 04:13:46PM 1 point [-]

EY believes that EY deserves it with probability p, while NB believes that EY deserves it with probability q.

You are using the same notation the OP used to mean something different!

Comment author: Plasmon 15 June 2013 05:00:50PM *  1 point [-]

Really?

EY believes that EY deserves it with probability p, while NB believes that EY deserves it with probability q

Oh! You're right. The OP's q is 1-(my q), so this solution reduces to option (1) in the OP.