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Seven Warning Signs of Bogus Science - a public service

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long post, but worth a read regardless of what your beliefs are ....


Seven Warning Signs of Bogus Science

Robert L. Park, Ph.D.

The National Aeronautics and Space Administration is investing close to a million dollars in an obscure Russian scientist's antigravity machine, although it has failed every test and would violate the most fundamental laws of nature. The Patent and Trademark Office recently issued Patent 6,362,718 for a physically impossible motionless electromagnetic generator, which is supposed to snatch free energy from a vacuum. And major power companies have sunk tens of millions of dollars into a scheme to produce energy by putting hydrogen atoms into a state below their ground state, a feat equivalent to mounting an expedition to explore the region south of the South Pole.


There is, alas, no scientific claim so preposterous that a scientist cannot be found to vouch for it. And many such claims end up in a court of law after they have cost some gullible person or corporation a lot of money. How are juries to evaluate them?


Before 1993, court cases that hinged on the validity of scientific claims were usually decided simply by which expert witness the jury found more credible. Expert testimony often consisted of tortured theoretical speculation with little or no supporting evidence. Jurors were bamboozled by technical gibberish they could not hope to follow, delivered by experts whose credentials they could not evaluate.


In 1993, however, with the Supreme Court's landmark decision in Daubert v. Merrell Dow Pharmaceuticals, Inc. the situation began to change. The case involved Bendectin, the only morning-sickness medication ever approved by the Food and Drug Administration. It had been used by millions of women, and more than 30 published studies had found no evidence that it caused birth defects. Yet eight so-called experts were willing to testify, in exchange for a fee from the Daubert family, that Bendectin might indeed cause birth defects.


In ruling that such testimony was not credible because of lack of supporting evidence, the court instructed federal judges to serve as "gatekeepers," screening juries from testimony based on scientific nonsense. Recognizing that judges are not scientists, the court invited judges to experiment with ways to fulfill their gatekeeper responsibility.


Justice Stephen G. Breyer encouraged trial judges to appoint independent experts to help them. He noted that courts can turn to scientific organizations, like the National Academy of Sciences and the American Association for the Advancement of Science, to identify neutral experts who could preview questionable scientific testimony and advise a judge on whether a jury should be exposed to it. Judges are still concerned about meeting their responsibilities under the Daubert decision, and a group of them asked me how to recognize questionable scientific claims. What are the warning signs?


I have identified seven indicators that a scientific claim lies well outside the bounds of rational scientific discourse. Of course, they are only warning signs -- even a claim with several of the signs could be legitimate.


1. The discoverer pitches the claim directly to the media.

The integrity of science rests on the willingness of scientists to expose new ideas and findings to the scrutiny of other scientists. Thus, scientists expect their colleagues to reveal new findings to them initially. An attempt to bypass peer review by taking a new result directly to the media, and thence to the public, suggests that the work is unlikely to stand up to close examination by other scientists.


One notorious example is the claim made in 1989 by two chemists from the University of Utah, B. Stanley Pons and Martin Fleischmann, that they had discovered cold fusion -- a way to produce nuclear fusion without expensive equipment. Scientists did not learn of the claim until they read reports of a news conference. Moreover, the announcement dealt largely with the economic potential of the discovery and was devoid of the sort of details that might have enabled other scientists to judge the strength of the claim or to repeat the experiment. (Ian Wilmut's announcement that he had successfully cloned a sheep was just as public as Pons and Fleischmann's claim, but in the case of cloning, abundant scientific details allowed scientists to judge the work's validity.)


Some scientific claims avoid even the scrutiny of reporters by appearing in paid commercial advertisements. A health-food company marketed a dietary supplement called Vitamin O in full-page newspaper ads. Vitamin O turned out to be ordinary saltwater.


2. The discoverer says that a powerful establishment is trying to suppress his or her work.

The idea is that the establishment will presumably stop at nothing to suppress discoveries that might shift the balance of wealth and power in society. Often, the discoverer describes mainstream science as part of a larger conspiracy that includes industry and government. Claims that the oil companies are frustrating the invention of an automobile that runs on water, for instance, are a sure sign that the idea of such a car is baloney. In the case of cold fusion, Pons and Fleischmann blamed their cold reception on physicists who were protecting their own research in hot fusion.


3. The scientific effect involved is always at the very limit of detection.

Alas, there is never a clear photograph of a flying saucer, or the Loch Ness monster. All scientific measurements must contend with some level of background noise or statistical fluctuation. But if the signal-to-noise ratio cannot be improved, even in principle, the effect is probably not real and the work is not science.


Thousands of published papers in para-psychology, for example, claim to report verified instances of telepathy, psychokinesis, or precognition. But those effects show up only in tortured analyses of statistics. The researchers can find no way to boost the signal, which suggests that it isn't really there.


4. Evidence for a discovery is anecdotal.

If modern science has learned anything in the past century, it is to distrust anecdotal evidence. Because anecdotes have a very strong emotional impact, they serve to keep superstitious beliefs alive in an age of science. The most important discovery of modern medicine is not vaccines or antibiotics, it is the randomized double-blind test, by means of which we know what works and what doesn't. Contrary to the saying, "data" is not the plural of "anecdote."


5. The discoverer says a belief is credible because it has endured for centuries.

There is a persistent myth that hundreds or even thousands of years ago, long before anyone knew that blood circulates throughout the body, or that germs cause disease, our ancestors possessed miraculous remedies that modern science cannot understand. Much of what is termed "alternative medicine" is part of that myth.


Ancient folk wisdom, rediscovered or repackaged, is unlikely to match the output of modern scientific laboratories.


6. The discoverer has worked in isolation.

The image of a lone genius who struggles in secrecy in an attic laboratory and ends up making a revolutionary breakthrough is a staple of Hollywood's science-fiction films, but it is hard to find examples in real life. Scientific breakthroughs nowadays are almost always syntheses of the work of many scientists.


7. The discoverer must propose new laws of nature to explain an observation.

A new law of nature, invoked to explain some extraordinary result, must not conflict with what is already known. If we must change existing laws of nature or propose new laws to account for an observation, it is almost certainly wrong.


I began this list of warning signs to help federal judges detect scientific nonsense. But as I finished the list, I realized that in our increasingly technological society, spotting voodoo science is a skill that every citizen should develop.




Dr. Park is a professor of physics at the University of Maryland at College Park and director of public information for the American Physical Society. He is also the author of Voodoo Science: The Road From Foolishness to Fraud (Oxford University Press, 2002). This article was originally published in The Chronicle of Higher Education, Jan 31, 2003.

No guitarists were harmed during the making of this message.


In general, harmonic complexity is inversely proportional to the ratio between chording and non-chording instruments.


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In 1929 the "New York Times" ridiculed Robart Goddard for suggesting that a rocket could work in outer space: "Goddard seems to lack the knowledge ladled out daily in high schools..." 40 years later, with Apollo II rocketing to the moon, The Times finally printed a retraction.


But that's nothing compared to the punishments suffered by those who believed the earth revolved around the sun rather than vice versa.


So what major scientific advance hasn't been accompanied by ridicule?


If NASA wants to give 1 million dollars to alternative energy R&D, that's money well spent. What may seem absurd today, may power your car-plane tomorrow.

Dooby Dooby Doo
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I use Park's list in my critical thinking class. It's a good start, and IMHO right at least 90% of the time. I use it to debunk "scientific breakthrough" snake-oil products, and assign my students to go out and do the same.


Park admits that "even a claim with several of the warning signs might be legitimate," to account for times when the scientific community overall was simply wrong about something, such as rocket propulsion. I also think "paradigm shifts" have happened in science, in a major way. Copernican astronomy was one, as was the shift from a Newtonian concept of matter to Einstein's relativity. The thing is, genuine shifts are a lot easier to recognize with historical hindsight than to see coming.


In the end it's all about independent verification and repeating results. With those criteria in mind, perhaps some technologies that sound outrageous today will be a reality in the future. But if some new-age guru babbles something about the Uncertainty Principle and immediately draws connections to the human soul, run, don't walk, in the other direction!

Stephen Fortner

Principal, Fortner Media

Former Editor in Chief, Keyboard Magazine

Digital Piano Consultant, Piano Buyer Magazine


Industry affiliations: Antares, Arturia, Giles Communications, MS Media, Polyverse



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Hi Dave,


Good post!


Do you subscribe to New Scientist? I find it an invaluable resource for cutting edge info. I also recommend the Kurzweil AI newsletter.


I have heard the anti-gravity bit for years. The woman with the floating bowling ball that was discredited etc.. Although, the subject warrants study. I believe it actually could happen. That's science though- weeding out what is seemingly true and what is total BS.


I am not a conspiracist. I do know there is technology, private and governmental that very few people have access to. It's fun seeing an article on something new and knowing they are still years behind. Lots of things don't make it to the market even though it's cool and it works.


If a company did invent a cheap, renewable, alternative energy source, and implemented it tomorrow, what do you think would happen?


The whole breaking the fundamental "laws" of science thing happens all the time. Faster than C? Yup. Entanglement- Wow! Real stuff that will blow your mind instead of some pseudo-science that misguides. The truth, as they say is stranger than fiction. There is so much out there. Think about how uninformed we will all look in 20 years.


We still need the wackos though. Sometimes they unintentionally create something useful that a saine person would never try. How else would we have ever come up with worcester sauce.

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I use Park's list in my critical thinking class. It's a good start, and IMHO right at least 90% of the time. I use it to debunk "scientific breakthrough" snake-oil products, and assign my students to go out and do the same.

Steve, what do you teach? I did not know that critical thinking was taught as a class unto itself. I could easily see that used in combination with any science course.


I remember an incident from high school physics. We had been learning about the construction of the atom and I asked where does the electron get its energy. The teacher looked at me, looked to the ceiling, and said, 'do you believe in a Supreme Being?'. A guy behind me, who later became my best friend said, 'why don't you give him a scientific answer like I don't know.'

No guitarists were harmed during the making of this message.


In general, harmonic complexity is inversely proportional to the ratio between chording and non-chording instruments.


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