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[Why] Smart People Believe Weird Things

LeBain writes "This Sep. 2002 Scientific American article on 'confirmation bias' and why people believe in the paranormal reminds us, 'we need to teach that science is not a database of unconnected factoids but a set of methods designed to describe and interpret phenomena.'"

7 of 186 comments (clear)

  1. Ray Hyman by Col.+Klink+(retired) · · Score: 5, Insightful
    I took a course at U Oregon by respected skeptic Ray Hyman (author of Water Witching, USA).

    He told us that when he was an undergrad, he got a job reading people's palms. Being an intelligent person, he at first thought it was silly and didn't believe it, but he needed the money. His employer gave him a book that described how to read palms by following a simple recipe.

    He was of course leary with his first customer. He was sure he'd be accused of fraud. Nevertheless, he followed the recipe and read the guys palm. He was amazed that the customer was so enthusiastic about how accurate the reading was. This filled Ray with more confidence, and in no time he was convinced that this was working. All his customers were convinced by his readings, so he had no reason to believe they weren't accurate.

    When he told a friend about how it really worked, his friend suggested that, for his next customer, he give the exact opposite reading that the book suggested. He did so, probably just as nervous as his first reading, expecting the customer to reject what he was saying. But, sure enough, the customer was impressed at how accurate the reading was. He did this again with the next few customers and soon realized it didn't really matter what he was saying. People were always able to connect his vague readings with something in their own lives.

    I remember another study where students were asked to fill out a small survey. The professor then reviewed all the surveys and gave each student a customized personality profile. The students were asked the rate the profiles, and all gave them very high rankings.

    The professor then asked each student to pass his profile to the student behind them (person in back passes to the front). In an instant, every student realized that they were all given identical profiles.

    --

    -- Don't Tase me, bro!

  2. 'Skeptical Correctness' by RobotWisdom · · Score: 5, Insightful
    I think the 'skeptic' community is just as guilty on this issue as the fringe-science community-- they have their equal-and-opposite 'confirmation bias' that in recent decades has rejected the idea of continental drift, the idea of ulcers being caused by bacteria, the idea that prions could be contagious, various health-and-diet ideas, etc etc etc.

    Similarly, it's becoming clear that humans are sensitive to pheromones, so there could be a whole realm of 'sixth sense' communication that skeptical-correctness has been unwilling to allow for. [some old thoughts on 'vibes']

  3. Teach History of Science! by Baconator · · Score: 4, Insightful

    One of my major complaints about the teaching of science in western academia is that it is taught without any reference to the history of science.

    As an undergraduate, I was in a class that was mostly full of astrophysics grad students. One day in class, the topic of Galileo's confrontation with Rome came up. An astro student in the class raised her hand and asked "so, are you saying that there was some sort of conflict between religion and science?" Now, maybe I'm just being elitist, but shouldn't someone who is well along the road to becoming a professional scientist be aware of some of the basic history of the field?

    Really, though, that's exactly the problem. Not only is the history of science not taught at the high school level, but it is unusual for working scientists to have any knowledge of the history of their own discipline, except perhaps from the last 25 or so years.

    Unfortunately, when you have such a near-sighted understanding of science, you tend not to realize that there have been big scientific mis-steps (many within our own century), or that scientific laws get modified or thrown out quite frequently.

    Without knowing the history, you can't really understand the method, and without understanding the method, you can't discriminate between good science, bad science, pseudo-science, and fantasy.

  4. Random Phenomena by dmorin · · Score: 4, Interesting
    There are some people that believe when you have a question or a problem, you open randomly to a page in the Bible, and the answer will be on that page. This, of course, just demonstrates the power of the human mind to interpret phenomena as they feel fit.

    True story - last last week, just before lunch, a coworker and I were discussing a Java design problem and how I hated our reliance on needing a database guy to write up some stored procedures for us. We discussed the possibility of going to JDO, and whether an XML database would do anything for us. I sat back down at my desk, reloaded slashdot, and got this. Coincidence my ass. Slashdot is the center of the universe.

  5. Mappers, Packers, and facts by ka9dgx · · Score: 5, Insightful
    This touches on mappers vs. packers approaches to thinking.

    A packer treats knowledge as a large collection of disparate facts. These are the people who go spastic if you don't give them step by step instructions. The don't understand systems that require interaction, and get greatly frustrated when you present them with an algorithm, as opposed to the list of steps the require to be able to do a task.

    A mapper is someone who has a large number of disparate facts floating around, in the background, waiting for them to fall into place on the map they make of the universe. To them a fact is of very limited value until it has been connected with others, and placed into the map. Mappers are very good at sensing when something doesn't fit, and have a keen sense of "the ring of truth" that resonates when a new fact makes many others suddenly converge into focus.

    Packers treat all facts with equal value, or that of the source. They are into such things as credentials, and structured authority.

    Mappers know all too well that authority is made to be abused, that systems need a swift kick to get them back on track, and that rules always drift away from the situations for which they were created. Thus mappers have issues with authority. It also makes them great programmers.

    I believe that mappers keep a "grain of salt" value linked to everything they know, and are willing to change that value as facts present themselves and change the picture. For example, I believe in ESP, as a vague sort of premonition that may someday be explained by physics. While I don't know how it works, there is sufficient evidence, in my experience, to concede that it probably (not definitely) exists.

    Thus, for me, I 80% believe in it. Which doesn't fit the boolean 100% required of a packer.

    --Mike--

  6. What a load of bull by iiii · · Score: 4, Insightful
    This article is such a load of bull. Ugh, where to begin?

    These stats they quote, or rather the tone and context in which they are used, are ridiculous.

    The underlying tenet of this whole article is: "If X has not been proven and approved by the scientific community then you are a laughable ignoramus for believing it might be true."

    He doesn't state this overtly, because most people would reject it, but that is the attitude he holds and is trying to convince reader to adopt.

    Nothing could be more asinine. That's like the patent officer who said "everything that can be invented has been invented" in 1898 (or whatever, I forget the details). To state that nothing that hasn't been scientifically proven exists, that's living in denial.

    Human scientists are still struggling to understand and explain countless things. I think you could build a reasonable argument that we're not even at the halfway point of understanding our world and universe. Just look at the human body. We still do not entirely understand all the proteins in our body and how they interact. DNA, the genetic code, and how it is used to create new complete humans with all the right parts. We don't understand how the brain works, memory, learning, intelligence. How many diseases are there that we don't fully understand yet? AIDS, Alzheimer's, cancer, the list is endless.

    To look at all the simple things right in front of our eyes that we don't yet understand and extrapolate that to all the other things we don't know is perfectly reasonable. And to form our own theories about phenomena that are not yet explained by science is reasonable. How else will we ever figure them out?

    Also, an expression of belief, or acceptance of something as possible, is not the same as saying it absolutely has been proven. If no one has a proven explanation of a phenomenon there is nothing even unscientific about me guessing about the causes. That's called a hypothesis, and it is the foundation of the scientific method. If sticking a bunch of tiny needles into people in certain spots seems to have some sort of consistent positive result, let us theorize about the possible causes of that, not mock the 88% of people who "accept" that there might be something there.

    So I say Brad Hines, ram your head just a little bit farther up your ass, so it covers not only your eyes and ears, but also your mouth. Then we won't have to hear you spewing this bullshit.

    --
    Light cup, beer drink, thin so chain, neck turtle fat, man I won't say it again
  7. Mr. Shermer is cutting science off at the knees by rebill · · Score: 4, Insightful

    Mr. Shermer's list is very interesting, and is missing a few of the more controversial ones that he could have said. However, had I been given a survey with those flimsy descriptions, I would have answered, "yes" to several of the items.


    30 percent of adult Americans believe that UFOs are space vehicles from other civilizations; 60 percent believe in ESP; 40 percent think that astrology is scientific; 32 percent believe in lucky numbers; 70 percent accept magnetic therapy as scientific; and 88 percent accept alternative medicine

    Let's go down his list, shall we?
    • Do I believe that UFOs are space vehicles?

    No, not really. There have been so many hoaxes and misinterpreted natural phenomena that my natural reaction to UFO reports is, "nah". However, the rules of logic say that if "X is true most of the time" it does not follow that "X is true all of the time". I accept that there is a slim chance that we have been visited, beause I have not been able to personally discount each and every case. So, depending on how vague the wording on the survey is, I may have had to answer "yes".

    • 60 percent believe in ESP

    First, you have to define "ESP" before this question makes sense. Although many forms of ESP have been discredited over the years, I have nagging doubts that there may be *something* that is valid somewhere in the whole morass, so I have not fully discounted the possibility of ESP. I do, however, happen to agree with Dr. Feynman about ESP - it would take a lot of convincing for me to start believing in a specific form of ESP - maybe 10,000 tests with identical results, and surviving scrutiny of the Amazing Randy.

    Yet still, I have not discounted ESP entirely, because I have suddenly decided to drop down to the speed limit several times, only to see the police with the radar gun a few minutes later. So I started keeping track - and to date, my "urge to slow down" ratio of "with police to no police in the area" is running about 3:1. So, I do believe.

    • 32 percent believe in lucky numbers

    I am quite convinced that, with 6 billion people on the planet, there will be at least one person who always chooses a number, and wins more often than an average distribution accounts for. For that person, there is a "lucky number". And, although I am not that person, his life does affect mine, as he shows up on the news, or she shows up and wins the pot, or whatever.

    It is a vague connection, but again, it depends on the survey question. I do believe in lucky numbers, for a very tiny number of humans, since statistically, there *should* be at least 1 such person.

    • 70 percent accept magnetic therapy as scientific

    There is well-documented medical research that indicates that a patient's attitude can drastically affect their recovery from certain illnesses. Magnetic Therapy can easily stumble into this, "the patient believes that they are better, and as a result, they are better" category.

    Now, having said that, I suspect that there may be something to magnetic therapy in certain cases. The trick is figuring out what those cases are. One of my teachers in engineering school proved that, as you move, you generated a slight voltage difference between your head and your feet (due to movement through the earth's magnetic field, and due to the curvature effect that causes your head to move slightly father than your feet do). Magnets will disrupt that slight field.

    Is it a tiny effect? Sure. Does that tiny effect have an impact? I have no idea - I do not have the equipment necessary to tackle that kind of experiment. Can we ignore it? Well, doesn't humankind have a history of ignoring "tiny effects" as "negligable" and finding out several hundred years later than those "tiny effects" are really important? Oops, I would have to answer, "yes" again.

    • 88 percent accept alternative medicine

    And with this one, he nicely cripples his own argument. There have been too many conflicting scientific studies in the medical profession; too many times the "answer" one month has become the "laughing stock" of the next.

    Well, as a result, I accept that today's "alternative" medicine can, in fact, become tomorrow's "accepted practice". ALl you have to do is look back at the political cartoons that were drawn around the time that cowpox was shown to prevent smallpox - it was completely against the medical practices of the day to intentionally infect someone with a disease. Yet, as a result of someone's brazen foray into an "alternative", that disease is basically wiped out.

    Hmmm. I may think that 90% of alternative medicines these days are bunk, but that leaves the others.
    -------

    So, here I am at the end of my rant, and I have answered a kind of a "yes" to each one of his points. I guess that I just believe in weird things.

    --

    Chivalry is not dead, it's just frequently misspelt. - M. Langley