JRMayne comments on Is Rationality Maximization of Expected Value? - Less Wrong
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mattnewport was talking about gamblers, you're talking about the (small?) subset of irrational gamblers.
The real question can be solved by empiricism; anyone heading to Vegas soon and willing to do a survey? Ask: A) Do you believe that you will leave the casino with more money than you started? B) If you don't leave the casino richer, do you expect the experience to be satisfying anyway? (Except do a better job of optimizing the questions for clarity.) Ask a few hundred people, get some free drinks from the casinos, publish your results in an economics journal or a cognitive biases journal, present your findings to Less Wrong, get karma, die happy.
Hey, I'll do the survey on me:
A: Yes. Of course, if I do go to Vegas soon, that's a fait accompli (I bet on the Padres to win the NL and the Reds to win the World Series, among other bets.)
But in general, yes. I expect to win on the bets I place. I go to Las Vegas with my wife to play in the sun and see shows and enjoy the vibe, but I go one week a year by myself to win cash money.
B. If I come back a loser, the experience can still be OK. But I'm betting sports and playing poker, and I expect to win, so it's not quite so fun to lose. That said, a light gambling win - not enough to pay for the hotel, say - leaving me down considering expenses gives me enough hedons to incentivize coming back.
--JRM