JamesAndrix comments on The continued misuse of the Prisoner's Dilemma - Less Wrong

29 Post author: SilasBarta 23 October 2009 03:48AM

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Comment author: JamesAndrix 23 October 2009 05:00:20AM 6 points [-]

As a group, they'd get more money appointing just one person to bid $0.01, and splitting it after the fact.

Comment author: timtyler 23 October 2009 04:48:57PM 0 points [-]

The rules of the game forbid that.

Comment author: billswift 23 October 2009 04:47:54PM -1 points [-]

You mean as a group they would have gotten the exact same amount of money as they in fact did.

Maybe we should call this the "socialist fallacy" - confusing a group's total benefit with the "equality" of the outcome for the group's members.

Comment author: Cyan 23 October 2009 05:10:33PM *  2 points [-]

No, I don't think that's what he means. There's an ambiguity in what is meant by "joint bid" in:

If two or more students bid the same thing, the difference between $20 and their joint bid will be divided among the winning bidders.

If seven people bid $0.01, does the prof take $0.01 for his $20, or does he take $0.07?

Comment author: SilasBarta 23 October 2009 07:09:41PM 1 point [-]

I noticed early on that the problem was ambiguous in this respect. Fortunately, for the point made, about the gains from cooperation and defection, it doesn't matter: all you need is that it's possible to share in larger gains by cooperating, unless someone defects, and the professor's reaction to what happened.