Slashdot Mirror

← Back to Stories (view on slashdot.org)

Brain Scanner Can Read People's Intentions

Posted by CowboyNeal on from the you-might-be-up-to-something dept.

Vainglorious Coward writes "Reality continues to catch up with Nineteen Eighty-Four with the announcement of the development of a brain scanner that can read a person's intentions. 'It's like shining a torch around, looking for writing on a wall,' said the leader of the project, Professor John-Dylan Haynes . Demonstrating his own mastery of doublethink, Haynes continued 'We see the danger that this might become compulsory one day, but we have to be aware that if we prohibit it, we are also denying people who aren't going to commit any crime the possibility of proving their innocence.'"

7 of 338 comments (clear)

  1. Re:Pfft. by gardyloo · · Score: 5, Funny

    I knew you were going to post that! Ha-ha!

    *disappears in a puff of logic*

  2. Very Disturbing by Nastard · · Score: 5, Insightful

    There is, as of yet, no laws prohibiting thinking about commiting a crime. The potential to change this is at least as scary as anything else the government or major corporations are doing to peel off our freedoms.

    I'm no tinfoil-hatter, but wow.

    1. Re:Very Disturbing by pubjames · · Score: 5, Interesting

      There is, as of yet, no laws prohibiting thinking about commiting a crime.

      I think about commiting crimes quite a bit. How would I rob a bank, for instance? Or "disappear" someone, without getting caught? If my country was occupied by a foreign army, what could I as an individual do to cause maximum damage to it?

      These are interesting and fun mental exercises, and of course novel writers think about this kind of stuff all the time. I just do this stuff in my head, and that's where it will stay. It does worry me however that these days it seems the law is beginning to view talking about doing something as if it was proof you will actually do it. If I had a friend that also liked doing this kind of mental exercise, and we discussed this kind of stuff via IRC, for instance, in the not too distant future I could envisage getting a visit from the police, or even ending up in jail, just for talking about stuff.

  3. Re:The quote espouses a fallacy by MoralHazard · · Score: 5, Insightful

    You cannot prove innocence. That's why our verdicts are "guilty" and "not guilty".

    These two statements are not logically related. Did you mean them to be? Our verdicts are "guilty" and "not guilty" because under the U.S. system you must be indicted for a crime, at which point you are presumed innocent. The logical question at trial is not "is he innocent", but "is he guilty".

    You can "prove" innocence to the same, imperfect degree that you "prove" guilt: by presenting evidence to that conclusion. A strong, defensible alibi is evidence of innocence, while eyewitness accounts are evidence of guilt. We never formally "prove" guilt in a court, at least not in the mathematical sense--even when sending someone to the Electric Chair, we're merely "pretty sure he's guilty". There's nothing stopping us from creating a hypothetical where U.S. courts presume guilt, and it's up to you to prove your innocence once you've been charged.

    We don't do that because it's stupid in practice--we want to limit the power of those in government, and a "presumed guilty" system encourages abuses of prosecution. It's just too easy to put the mechanisms of the state in service of tyranny, which is kind of what the people that founded this country were trying to avoid. But this has *nothing* to do with whether guilt or innocence can be proven, formally.

  4. Timing issues by venicebeach · · Score: 5, Informative

    I think this is misleading.

    Functional MRI measures changes in blood oxygenation, which are indicitave of changes in neural activity. However, the hemodynamic response is slow, peaking about 6 seconds after the changes in neuronal firing rates. The decisions described in the article probably happen within milliseconds. The article is short on details, but what they probably did was analyze the data from the decision moment after the fact and see if they could use it to predict the subsequent action. This is different from actually knowing what someone is going to do before they do it, which is something that is practically impossible with fMRI due to the timing issues.

  5. Interesting but exaggerated by tgv · · Score: 5, Informative

    Ok, I work as a post-doc in the field and actually know the work of Haynes. They are not predicting someone's actions. Their fMRI data can distinguish between their subjects' state of mind after the fact. There are several fundamental differences between this experimental set-up and real action prediction. One of them is that fMRI doesn't yield a reliable signal until 6 seconds after the decision has been made. Another one is that in this experiment the action was carried out, i.e. it was not a hidden intention. In this experiment, subjects had to hold on to their decision during a variable time; i.e., they had to wait for a signal before taking the action, but they had to perform it. So in reality, the experiment looked at the process of holding on to a certain intention, and that intention was rather artificial. And it still cannot be done without knowing the outcome of the action, i.e., a large number of samples has to be taken with the subject's cooperation before any "prediction" can be made. So I would conclude that, interesting as the outcome may be, the article is highly exaggerated.

  6. Re: Minority Report and other Sci-Fi by pubjames · · Score: 5, Informative

    From Wikipedia:

    Today apostasy is punishable by death in the countries of Saudi Arabia, Yemen, Iran, Sudan, Afghanistan, Mauritania, the Comoros and, most likely, Iraq. Similarly, blasphemy is punishable by death in Pakistan. In Qatar apostasy is a capital offense, but no executions have been reported for it.