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Gambling Could Reveal Which Scientific Studies Are Worth Their Salt (sciencemag.org)

sciencehabit writes with this interesting story about using prediction markets to weed out false positives in scientific experiments. From the article: "Gambling is frowned upon in many circles. But what if the gamblers are researchers betting on how each other's experiments will turn out, and the results are used to improve science itself? A group of psychologists has found that their collective gambling—with real money—predicted the outcome of attempts at replicating experimental results better than their own expert guesses. They propose that this type of gambling setup, known as a prediction market, could become part of how science gets done."

39 of 63 comments (clear)

  1. the interesting part by gtall · · Score: 4, Interesting

    The interesting part seems to be that at least scientists use different weights between asking their opinion (such as a poll) and gambling on outcomes with real money.

    1. Re:the interesting part by Anonymous Coward · · Score: 2, Interesting

      I wonder if... these psychologists can replicate experimental results of *this* experiment... or are their experiments as good as gambling?

    2. Re:the interesting part by Some+nick+or+other · · Score: 3, Interesting

      Surprisingly and counter to intuition, it doesn't seem like artificial markets need to use real money to work. Play money produces comparable results in many cases.

      It might be that all that is needed is some kind of limited resource so that people who make consistently bad predictions have their impact weighted down until they no longer affect the combined prediction, and that the wisdom of (thus suitably selected) crowds does the rest.

    3. Re:the interesting part by Anonymous Coward · · Score: 4, Insightful

      Not really. Gambling is seldom limited by if the gamblers can afford it or not.
      The big difference is that usually when it comes to making predictions people have a situation where they one outcome is beneficial for them even if it was just a case of "It would be nice if this was the case."
      There simply is nothing to gain from having a correct prediction and nothing to lose from having a wrong prediction so people pick the outcome based on what they would like to happen.
      Bringing in money, real or fake, is sufficient for people to override this mental block and go with what they actually think, not what they want to think.

    4. Re:the interesting part by Esteanil · · Score: 1

      The interesting part seems to be that at least scientists use different weights between asking their opinion (such as a poll) and gambling on outcomes with real money.

      Nope. Spot the difference:

      " their collective gambling —with real money—predicted the outcome of attempts at replicating experimental results better than their own expert guesses. "

      --
      I'm a dreamer, the world is my playpen. But hey, I'm a serious person, I can't dream all the time.
    5. Re:the interesting part by alvinrod · · Score: 1

      I don't find it surprising. You could ask anyone their opinion about something and they'll probably give you some amount of truth mixed with a little bit of what they want to believe is true. On the other hand, if asked to wager on something, there's potential loss involved and no matter how much you might like to lie to yourself, it cannot affect reality.

      Even the most devoutly religious would not actively wager money to put their faith to the test. The clever ones would probably quote some scripture about it being immoral so as to duck the issue entirely, but for anyone else claiming spiritual powers or divine influence, it would be a losing proposition. This has occurred enough over time collectively that in the West religion is slowing being morphed into a glorified social club that many people stay in more so out of tradition than actual belief.

    6. Re:the interesting part by moeinvt · · Score: 1

      Well said. There's definitely a subtle alteration of perspective going on when you put a monetary loss into the equation. I think you've nailed it by suggesting that wagering diminishes the "wishful thinking" influence on a belief.

    7. Re:the interesting part by WolfWithoutAClause · · Score: 1

      > Even the most devoutly religious would not actively wager money to put their faith to the test.

      People do this kind of stuff all the time.

      Many people wager their lives on their belief in a God, and... usually die.

      George R. Price famously gave all his possessions to the poor; got evicted, fell into depression and then killed himself.

      --

      -WolfWithoutAClause

      "Gravity is only a theory, not a fact!"
  2. The Future of Science by Anonymous Coward · · Score: 1

    WTF are all these MBA's doing in my lab?

    1. Re:The Future of Science by khallow · · Score: 1

      Do you really think having an MBA indicates someone is good at trading in a prediction market?

    2. Re:The Future of Science by Anonymous Coward · · Score: 1

      No, but I do think MBA's will start to show up anywhere they smell money.

      They'd probably start offering derivative products to the scientists to mange their exposure.

    3. Re:The Future of Science by GLMDesigns · · Score: 1

      MBA /= traders. And, there is nothing wrong with derivatives. The problem is forcing an industry to sell a product they don't want (sub-primes) and then being surprised that they sold off the paper as quickly as they could.

      --
      If you're scared of your govt then you need to further restrict its powers
      Vote 3rd Party in 2016 and beyond
    4. Re:The Future of Science by fibonacci8 · · Score: 1

      The scientists become less attached to the MBAs than to lab rats, which should eliminate some experiment bias.

      --
      Inheritance is the sincerest form of nepotism.
    5. Re:The Future of Science by khallow · · Score: 1

      Where do you think the money for those sub-prime mortgages came from?

      Central banks and a relaxing of the regulations on reserve amounts (to 50 to 1 leverage) actually.

      It was the derivatives.

      They could have held US treasuries and still screw up at 50 to 1 leverage.

    6. Re:The Future of Science by moeinvt · · Score: 1

      "there is nothing wrong with derivatives."

      There are plenty of problems with the derivatives that were being cooked up in the early '2000's.

      A "Credit Default Swap(CDS)" was basically a fraud perpetrated by companies like AIG. It was a way of selling "insurance" without calling it "insurance" and thus evading the capital requirements for traditional insurance policies. You bought bonds from XYZ Inc and want "insurance"(a CDS) in case they don't pay you back. AIG is happy to oblige, even though AIG doesn't have sufficient funds to cover your loss. That's a problem.
      Even worse was what they called a "Naked" CDS, which is the same as taking out an insurance contract on your neighbor's house. Firm 'A' loans money to Firm 'B'. Firm 'A' buys a CDS from AIG to "insure" the loan. Then, some other company sells a "naked CDS" to firm 'C'. Thus, firm 'C' is placing a pure bet on the inability of one firm to pay back the other, even though firm 'C' is not party to the original loan. THAT is a big problem!
      Mortgage backed securities were also a huge problem because risk was misrepresented and half the time the assets hadn't been officially put in trust before the things were sold. WTSHTF in the mortgage market, there were cases where they literally did not know which mortgages went with which trust.

      I'd qualify your statement by saying "there's nothing wrong with derivatives" provided they are marked to market on a regular basis and every firm is required to hold capital reserves to cover all of their bets.

  3. Kinda like InTrade by fustakrakich · · Score: 1

    Las Vegas casino overs will have something to say about this. But better than mere gambling, let's put these guys in the ring. Make it into a Gladiator contest. Then you'll have a market.

    --
    “He’s not deformed, he’s just drunk!”
  4. Well if it works for business... by ArsenneLupin · · Score: 2

    ... then why not also for science?

  5. It does no such thing... by the_skywise · · Score: 3, Insightful

    It's just enforcing consensus - It doesn't mean the science will be right or wrong anymore than which horse wins the race.

    Yeah, the odds increase the probability of a success but that's not a guarantee.

    Geez, is this what's become of "science" in the world today?!

    1. Re:It does no such thing... by ganv · · Score: 1

      Of course, empirical verification has to be the deciding factor. But right now there is very little way to communicate the insights that many scientists have about which studies are reliable. We could be much more efficient in doing future studies if there were a way to collect assessments of those who work in closely related fields without taking years to get to know people well enough to get them to tell you their actual opinions even though they haven't been able to focus on that question to publish an article on the subject.

      I don't think 'gambling' is the right word. And the devil is in the details. Any system like this is likely going to be gamed since careers and money are at stake. But the current publishing system is gamed all the time, so the new system doesn't have to be perfect. I just need a way to access some evaluations of a paper by others who have read it rather than figuring out all its problems on my own.

    2. Re:It does no such thing... by penguinoid · · Score: 1

      To me, this seems like an important development. Keep in mind that there's huge biases in scientific publishing in favor of interesting studies (translation, in favor of studies with "surprising", aka unlikely, results; also against repeating and confirming experiments). Furthermore, once a journalist gets ahold of it, every piece of research is likely to produce a cure for cancer, fusion reactors, or revolutionize some aspect of computing. This based on the part where the scientist said, "hint, hint, need funding".

      Now, if you're an expert in the field you'll have no trouble understanding what's what. But the rest of us could do with a translator sometimes.

      --
      Don't waste your vote! Vote for whoever you want, unless you live in a swing state it won't matter anyways
    3. Re: It does no such thing... by ljw1004 · · Score: 1

      It's called a "prediction market". It's been experimentally found to have better success in getting close to the truth than other techniques we have.

  6. Gamblers by Ol+Olsoc · · Score: 1
    I have an idea - fantasy science leagues!

    Model it after fantasy football, you pick your team of scientists and win or lose based on how they do.

    Draft kings is on the job as we speak.

    --
    The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
  7. already have this by Goldsmith · · Score: 1

    We already have institutionalized team based gambling to help decide which science to pursue. It's called "grant review committees."

    1. Re:already have this by NostalgiaForInfinity · · Score: 1

      Grant review committees usually don't have much at stake when making their decisions.

    2. Re:already have this by Goldsmith · · Score: 1

      Really? Grant review committees I've been on handed out a couple million dollars worth of bets... I mean, grants.

    3. Re:already have this by NostalgiaForInfinity · · Score: 1

      Yes, they hand out millions of dollars worth of bets... with other people's money.

      And what happens to the grant committee members if the projects don't deliver anything useful? Basically nothing.

      Of course, scientific research projects rarely "fail" anyway because grant recipients have an interest in representing their work in the best possible light, and neither granting agencies nor grant committees have an incentive for challenging them.

    4. Re:already have this by riverat1 · · Score: 1

      Scientific research projects rarely fail because even negative results can be useful scientific information.

  8. Gamblers 2 by Ol+Olsoc · · Score: 1
    Gambling is a losers game. The idea of tying a losers game to science is a bit disturbing at best.

    I see they have been having difficulty getting participants.

    Good.

    --
    The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    1. Re:Gamblers 2 by Ol+Olsoc · · Score: 1

      Yes, nothing like difficult to prove scientific theories! Being difficult to prove is working well for global warming/climate change, so why not for this as well!

      All hail how making things harder helps science!

      I wrote "I see they have been having difficulty getting participants."

      Umm, "difficulty getting participants" != "difficult to prove." Thanks for the Jeremiad though, cowardly denier.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    2. Re:Gamblers 2 by moeinvt · · Score: 1

      "Gambling is a losers game."

      In Vegas, yes, because the odds always favor the house. In the real world, the odds might be in your favor. You read a paper describing an experiment and the results. It's up to you to determine if it makes sense and if you think the results can be replicated. Asking yourself "Would you bet money on it?" just puts it in a different perspective. In our culture, bringing money into the equation puts a new twist on things. I think that asking that question is simply analyzing another dimension of your thoughts.

  9. God does not play dice by mrego · · Score: 1

    God/nature does not play dice, but apparently scientists do or should?

  10. I've used this for IT project analysis by bfwebster · · Score: 4, Interesting

    Estimating confidence in the completion date for an IT project can be hard. When I've been asked to review a troubled IT project, I've found that a very useful technique to determine how far along the project actually is -- and when it's actually likely to be done -- is to ask those involved at different levels what their "$1,000 confidence level" is -- that is, what date they would be willing to bet $1,000 out of their own pocket that the project will actually be done by. I find that even the most optimistic engineer suddenly turns cautious and starts thinking of all the things that could go wrong.

    I then ask what their $10,000 confidence level is. Those answers tend to be the most accurate. ..bruce..

    --
    Bruce F. Webster (brucefwebster.com)
  11. Peer review commitees by goombah99 · · Score: 2

    Proposals are gambling. When you write a white paper at a company it goes through layers of managerial review if it would be worth the companies time to have you complete a full proposal. Then the Government review panel looks at and decides if they want to invest in that. Peer review informs on the odds foliding in many predictors of success, such as past performance.

    Finally the reviews are parimutual gambling. Your odds of winning are not strictly the value of your proposal but the relative odds amongst a group of competitors.

    --
    Some drink at the fountain of knowledge. Others just gargle.
  12. It worked for a lost nuclear weapon by coolmoose25 · · Score: 1

    In the Palormares incident in 1966, a B-52 collided with a refueling tanker and both planes were lost. The plane was carrying 4 nuclear weapons, 3 of which were found on land (and two had their conventional explosives go off), but one fell into the Med. Dr. John P. Craven used a Bayesian Search theory to locate the lost bomb. The first step in the Bayesian Search is to formulate hypotheses for where the bomb might have gone down. Craven put a bottle of Scotch up as a prize for the person who came closest to where the bomb would actually be found, and got several hypotheses for where the bomb went down. While this isn't exactly the type of gambling discussed above, putting a real reward up clearly motivates people to give their very best guesses! Oh yeah, they found the bomb, and the actual recovery of it was fictionalized in the movie Men of Honor with Deniro and Cuba Gooding Jr.

    --
    Brawndo: It's what plants crave!
  13. Always a good question by moeinvt · · Score: 1

    "Would I bet money on it and with what odds?"

  14. Yeah, but we're talking about psychology by petes_PoV · · Score: 1

    A group of psychologists has found that their collective gambling—with real money—predicted the outcome of attempts at replicating experimental results better than their own expert guesses.

    That might work for something like psych, where few results are reproducible - or even where few "experiments" are re-tried. However, I doubt that the real world reflects the wishes of some profs with a penchant for a flutter and too much free time.

    Now if they could apply quantum mechanics to the problem, instead of gambling, there might be some interesting results.

    --
    politicians are like babies' nappies: they should both be changed regularly and for the same reasons
  15. Re:Psychologists by riverat1 · · Score: 1

    Perhaps you'd like to place a wager on that?

  16. enumerated vs unenumerated by superwiz · · Score: 1

    One is gambling ones reputation when making a public prediction. But the estimating a value of one public statement (correct or incorrect) is unenumerated. Money is a token for enumerating exchange. Currency doesn't have to exist in the form issued by a government entity. Stackexchange, for example, is pretty good at enumerating reputation gains and losses (and has methods for staking ones reputation gains on answers to certain questions). It's hardly surprising that enumerated exchange of knowledge is more precise than unenumerated one.

    --
    Any guest worker system is indistinguishable from indentured servitude.
  17. Better Peer review? by ebvwfbw · · Score: 1

    I have a feeling they're doing better science because if they bet against one of their peers, they know if they have skin in the game that they're going to be a lot more critical and call bullshit easier. When it's a dolt/dumbass that's handing out public money, he doesn't care. Let's see, followed outline, has some good looking graphs, isn't disproving Man Made Global Warming - don't care, give 'em money.