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Lumifer comments on Open Thread, September 30 - October 6, 2013 - Less Wrong Discussion

4 Post author: Coscott 30 September 2013 05:18AM

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Comment author: Lumifer 03 October 2013 06:33:55PM 7 points [-]

What's the rational way to behave in a prediction market where you suspect that other participants might be more informed than you?

Stay out of the market.

Alternatively, if you have a strong prior, you can treat the bets of other better-informed participants as evidence and do Bayesian updating. But it will have to be a pretty strong prior to still bet against them.

Of course, if the market has both better-informed and worse-informed participants and you know who they are, you can just bet together with the better-informed participants.