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lastpositivist's profile
Liam Bright
Liam Bright
Liam Bright
@lastpositivist

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Liam Bright

@lastpositivist

Aspiring philosopher; tolerable human; "amusing combination of sardonic detachment & literally all the feelings felt entirely unironically all at once" [he/his]

Joined May 2011

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    1. Liam Bright‏ @lastpositivist 5 Apr 2018

      Is there a Dutch Book argument saying that the agent (to avoid book) must have credences defined for all the propositions in the event space? All DB proofs I know assume as much, and I am worried you would have to make controversial assumptions about one gambles with no credence?

      2 replies 0 retweets 5 likes
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    3. Jonathan Weisberg‏ @jweisber 5 Apr 2018
      Replying to @przcrbll @lastpositivist and

      The accuracy argument doesn't require credences be defined over the whole algebra. And the Dutch book theorem relies on similar geometry, so maybe? But certainly many instances of the DB argument can operate on just a partial credence function.

      2 replies 0 retweets 2 likes
    4. Jonathan Weisberg‏ @jweisber 5 Apr 2018
      Replying to @jweisber @przcrbll and

      E.g. if I've fallen for the bank teller fallacy and assigned Pr(Feminist) = 1/2, Pr(Feminist & Bank teller) = 3/4, I can be Dutch booked. Hmmm... now I'm thinking maybe this isn't what you were asking about?

      3 replies 0 retweets 1 like
    5. Jonathan Weisberg‏ @jweisber 5 Apr 2018
      Replying to @jweisber @przcrbll and

      I think these videos by Richard Pettigrew (@Wiglet1981) present and prove the Dutch book theorem for (possibly) merely-partially-defined credence functions: http://www.showme.com/sh/?h=EChN7ey  and http://www.showme.com/sh/?h=pCb4QXg 

      1 reply 0 retweets 1 like
      Liam Bright‏ @lastpositivist 5 Apr 2018
      Replying to @jweisber @przcrbll and

      Thank you!

      5:14 PM - 5 Apr 2018
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      • Jonathan Weisberg
      0 replies 0 retweets 1 like

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