neq1 comments on Beauty quips, "I'd shut up and multiply!" - Less Wrong

6 Post author: neq1 07 May 2010 02:34PM

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Comment author: neq1 10 May 2010 02:12:06PM 0 points [-]

Yes, one pay out is the relevant case. The reason is because we are asking about her credence at an awakening.

Comment author: Morendil 10 May 2010 05:11:38PM 1 point [-]

How does the former follow from the latter, exactly? I seem to need that spelled out.

Comment author: neq1 10 May 2010 06:56:48PM 0 points [-]

The interviewer asks about her credence 'right now' (at an awakening). If we want to set up a betting problem based around that decision, why would it involve placing bets on possibly two different days?

If, at an awakening, Beauty really believes that it's tails with credence 0.67, then she would gladly take a single bet of win $1 if tails and lose $1.50 if heads. If she wouldn't take that bet, why should we believe that her credence for heads at an awakening is 1/3?