Through a glass, darkly

I was chatting with my younger son a couple of days ago.  He's a professional scientific glassblower, so anything having to do with the properties, chemistry, or uses of glass is going to interest him automatically.  And this was how he ran into the name of Walter John Kilner.

My son asked me if I'd ever heard of him, which I hadn't, and he suggested I look into him as a possible topic for Skeptophilia.  What I found out was pretty interesting -- straddling that gap between "fascinating" and "crazy."

Kilner, who lived from 1847 to 1920, studied medicine, physics, and engineering at Cambridge University, eventually earning a master's degree as well as a doctorate in medicine.  He had a private medical practice as well as being a "medical electrician" -- then a brand-new field -- at St. Thomas Hospital in London.

So the man was certainly not lacking in brains.  But he veered off into an area that is fringe-y at best, and to this day we don't know if what he was seeing was real.

The basic idea is familiar to us today as the "aura," but what most people mean by that -- some sort of spiritual halo around humans (and supposedly, all living things) that conveniently can't be measured by any known technique -- is several shades more woo-woo than what Kilner meant.  He seems to have latched onto the idea of there being a kind of electromagnetic radiation given off by the human body that was outside the range of human vision, and which could potentially be used as a diagnostic tool if a device was developed that allowed us to see it.

In fact, there is invisible radiation coming from our bodies; it's infrared light, which is light that has a longer wavelength than red light.  (Nota bene: it took me some pondering to get past the misunderstanding that infrared and thermal radiation aren't the same thing.  Thermal radiation can be in any region of the spectrum -- think of the red light given off by a hot stove burner.  The wavelength of thermal radiation is dependent upon the temperature of the source.  Infrared, which can be emitted thermally, is defined by having wavelengths longer than that of visible light, regardless of how it's generated.)

More germane to Kilner and his goggles, although the human eye can't detect it, mosquitoes' eyes can (one of the ways they find us in the dark), and it can be sensed by the "loreal pits" of pit vipers that they use for finding prey at night, not to mention the infrared goggles used by the military, which convert long-wavelength infrared light to shorter wavelengths that we can see.  

So there was at least some scientific basis for what he proposed, and remember that this would have been in the late nineteenth century, when the properties of electromagnetic radiation were still largely mysterious.  What Kilner proposed was that since light is altered when it passes through filters of any kind, there might be a filter that could take the electromagnetic radiation from the aura and convert it to visible light.

His approach was to take thin layers of alcohol-soluble dyes, most derived from coal tar, sandwiched between two sheets of clear glass.  He claimed he found one that worked -- a blue dye he called dicyanin -- but according to Kilner, it was difficult to produce, so he started fishing around for a substitute.

Along the way, he convinced a lot of people that his dicyanin filter allowed him to see the human aura, and generated a huge amount of enthusiasm.  People suggested other blue dyes -- cobalt-based ones, and other coal tar derivatives like pinacyanol -- but the results he obtained were equivocal at best.  Nobody was able to produce dicyanin again, or even figure out what its chemical composition was, which certainly made any skeptics raise an eyebrow.  But to the end of his life, Kilner swore that his dicyanin filter allowed him to see clearly an aura around his volunteers' naked bodies, despite an analysis by the British Medical Journal stating bluntly, "Dr. Kilner has failed to convince us that his 'aura' is more real than Macbeth's visionary dagger."

So what, if anything, did Kilner see?  The easiest answer is: we don't know.

The whole thing reminds me of Kirlian photography -- those familiar (and striking) photographs that result from placing a photographic plate on top of a high voltage source, then adding a flat object of some kind.  This produces a coronal discharge, a purely physical effect caused by the voltage creating temporary ionization of the air molecules.  Pretty much anything works; I've seen Kirlian photographs of coins.  But this doesn't stop the woo-woos from claiming that Kirlian photographs are capturing the aura, and giving it all sorts of spiritual and/or esoteric overtones.

Kirlian photograph of a dusty miller leaf [Image licensed under the Creative Commons Rarobison11, MDR Dusty Miller, CC BY-SA 4.0]

In the case of Kilner, though, the effect was never successfully replicated.  This hasn't stopped people from making "Kilner goggles" that you can still buy online, if you've got no better use for your money.  But as far as Kilner himself, he seems to have been entirely sincere -- i.e., not a charlatan or outright liar.  He pretty clearly believed he'd seen something that deserved an explanation.  Whether it was some kind of optical effect produced by his mysterious dicyanin, or a faint blur in the image that he then gave more significance than it deserved, we honestly don't know.  (This is reminiscent of the "canals of Mars," first described by astronomer Giovanni Schiaparelli, which were clearly an artifact of poor telescope quality -- when the optical equipment improved, the Martian canals mysteriously vanished, never to be seen again.)

Another possibility, though, was brought up by my wife; a lot of the dyes and solvents that Kilner used are neurotoxic.  It could be that what he was seeing was a visual disturbance caused by inhaling the fumes from nasty compounds like polycyclic aromatic hydrocarbons, common in the coal tar he was using to prepare his dyes.

The interesting thing is that Kilner completely dismissed the esoteric spin that auras were given during the last decade of his life, primarily by the Theosophists and Spiritualists who were skyrocketing in membership during the first decades of the twentieth century.  Kilner remained to the end a staunch believer in the scientific method, and that anything he'd seen had a purely physical origin that was explainable in terms of the properties of light and electromagnetism.

It's an interesting case.  The fact that in the hundred years since he died, no one's ever been able to replicate his findings, strongly supports the fact that he was simply wrong -- he'd seen something, but it had nothing to do with anything that could be called an aura.  Even so, he's an interesting example of someone who was clearly trying to do things the right way, but his own determination to prove his conjecture blinded him to the obvious conclusion.

Further stressing the truth of Leonardo da Vinci's statement that "We must doubt the certainty of everything that passes through our senses."

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One of the most devastating psychological diagnoses is schizophrenia.  United by the common characteristic of "loss of touch with reality," this phrase belies how horrible the various kinds of schizophrenia are, both for the sufferers and their families.  Immersed in a pseudo-reality where the voices, hallucinations, and perceptions created by their minds seem as vivid as the actual reality around them, schizophrenics live in a terrifying world where they literally can't tell their own imaginings from what they're really seeing and hearing.

The origins of schizophrenia are still poorly understood, and largely because of a lack of knowledge of its causes, treatment and prognosis are iffy at best.  But much of what we know about this horrible disorder comes from families where it seems to be common -- where, apparently, there is a genetic predisposition for the psychosis that is schizophrenia's most frightening characteristic.

One of the first studies of this kind was of the Galvin family of Colorado, who had ten children born between 1945 and 1965 of whom six eventually were diagnosed as schizophrenic.  This tragic situation is the subject of the riveting book Hidden Valley Road: Inside the Mind of an American Family, by Robert Kolker.  Kolker looks at the study done by the National Institute of Health of the Galvin family, which provided the first insight into the genetic basis of schizophrenia, but along the way gives us a touching and compassionate view of a family devastated by this mysterious disease.  It's brilliant reading, and leaves you with a greater understanding of the impact of psychiatric illness -- and hope for a future where this diagnosis has better options for treatment.

[Note: if you purchase this book from the image/link below, part of the proceeds goes to support Skeptophilia!]

 

Proof, souls, skepticism, and being wrong

I think one of the problems with scientists and non-scientists not understanding each other revolves around the meaning of the word "proof."

I ran into two interesting instances of this in the last couple of days.  One of them was a response to my post last week about the conspiracy theorist conference that's being held next Saturday in my home town, in which I wrote (amongst other comments) a rather snarky paragraph about people who believe in chemtrails, anti-vaxx propaganda, and so on.

Well, that sort of thing always upsets some readers.  "I hate these damn skeptics," wrote one commenter, "who think they have everything proven!  The world always has to be how they see it!"

First off, in my own defense, I've never claimed that I was infallible; only that the evidence very much supports the contention that (1) chemtrails don't exist, and (2) vaccinations are safe and effective. And just because I'm pretty certain to be right about these two things doesn't mean that I think I'm right about everything.

But the more interesting thing is the use of the word "proof."  Because in science, disproof is usually far easier than proof.  If you have a model of how you think the world works, you design a test of that model, and see if the results are consistent with what the model predicts.  If they are not -- assuming that nothing was wrong with the research protocol -- then your model is disproven (although scientists generally prefer the word "unsupported").

Of course, the problem is that in this context, you never really "prove" your model; you simply add to the support for it.  Nothing is ever proven, because additional experiments could show that your model hadn't predicted correctly in all cases, and needs revision.

But still the sense persists out there amongst your average layperson that scientists "prove their theories," and that all you need is some hand-waving argument and a few fancy-looking diagrams to accomplish this.

As an example of the latter, consider the site that is making the rounds of social media with the headline "Scientists prove the existence of the soul!"  Of course, when I clicked on the link, I was already primed to view the whole thing with a jaundiced eye, because it's not like I don't have my own biases on this particular topic.  But I'm happy that in this case, I wasn't off base in my skepticism, because this link turned out to be a wild woo-woo claim par excellence.

The whole thing is based upon the "research" of a Russian scientist who claims to have photographed the soul leaving the body as someone dies.  Here's a pair of his photographs:

And here is the accompanying explanation:

The timing of astral disembodiment in which the spirit leaves the body has been captured by Russian scientist Konstantin Korotkov, who photographed a person at the moment of his death with a bioelectrographic camera.

The image taken using the gas discharge visualization method, an advanced technique of Kirlian photography shows in blue the life force of the person leaving the body gradually.

According to Korotkov, navel and head are the parties who first lose their life force (which would be the soul) and the groin and the heart are the last areas where the spirit before surfing the phantasmagoria of the infinite.

In other cases according to Korotkov has noted that "the soul" of people who suffer a violent and unexpected death usually manifests a state of confusion in your power settings and return to the body in the days following death.  This could be due to a surplus of unused energy.

Well, first, those doesn't look to me like Kirlian photographs.  Kirlian photography is a way of capturing an image of the static electrical discharge from an object, and shows distinctive bright "flame" marks around the object being photographed.  Here, for example, is a Kirlian photograph of a leaf:

What Korotkov's photograph looks like to me is a false-color photograph taken with an infrared camera, which colorizes the regions of a human body (or anything) based upon its temperature.  So naturally the heart (positioned, as it is, in mid-torso) and the groin would tend to be warmer.  I don't think it has anything to do with your soul sticking around because it's especially attached to your heart and your naughty bits.

I also have to wonder how Korotkov was able to study people who experienced "violent and unexpected deaths."  It's not as if you can plan to have a scientist around for those, especially the unexpected ones.

But in the parlance of the infomercial -- "Wait!  There's more!"

The technique developed by Korotkov, who is director of the Research Institute of Physical Culture, St. Petersburg, is endorsed as a medical technology by the Ministry of Health of Russia and is used by more than 300 doctors in the world for stress and monitoring progress of patients treated for diseases such as cancer.  Korotkov says his energy imaging technique could be used to watch all kinds of imbalances biophysical and diagnose in real time and also to show if a person does have psychic powers or is a fraud.
This technique, which measures real-time and stimulated radiation is amplified by the electromagnetic field is a more advanced version of the technology developed for measuring Semyon Kirlian aura.

Korotkov observations confirm, as proposed by Kirlian, that "stimulated electro-photonic light around the tips of the fingers of the human being contains coherent and comprehensive statement of a person, both physically and psychologically."

In this video interview Korotkov speaks of the effect in the bioenergy field with food, water and even cosmetics. And emphasizes one umbrella drink water and organic food, particularly noting that the aura of the people in the Undies [sic] suffers the negative effects of nutrients as technologization distributed in this society.

Korotkov also speaks of their measurements in supposedly loaded with power and influence that people have in the bioenergy fields of others. Checking Rupert Sheldrake's experiment of the feeling of being watched : Because a person's bioenergy field changes when someone else directs his attention, even though it is backwards and not consciously perceived. Also a place fields are altered when there is a concentration of tourists.

Well then.  We have "electro-photonic light" (is there another kind?), "bioenergy fields" (sorry, Sheldrake, but there's no evidence they exist), a reference to "real" versus "fraud" psychic powers, and a contention that tourists affect a person's soul.  Not to mention the thing about "undies," which I sincerely hope was a typo or mistranslation, because I would hate to think that my boxers are somehow creating negative effects in my spiritual nutrients.

And this is what people read, and say that it "proves the existence of a soul?"

Of course, what we have going on here is confirmation bias -- when you already believed something, so a tiny piece of sketchy evidence is all you need to shore up that belief.  I think I can state without fear of contradiction that no one who didn't already believe that souls exist would be convinced by this article.

So that's the problem, isn't it?  And not just in this admittedly ridiculous claim that equates dead bodies cooling off with their souls escaping.  Think of people who listen, uncritically, to "news" about their favorite controversial story -- evolution vs. creationism, the safety of vaccinations, the role of human activities in climate change, whether the public school system is headed for disaster.  If you uncritically accept what you're hearing as proof, just because it supports the contentions you already had, you'll never find out where you've got things wrong.  And that, to me, is the heart of science -- and the only way to lift yourself above your biases.

If you have fifteen minutes, and want to listen to someone who demonstrates this point brilliantly, take a look at the TED talk by Kathryn Schulz called "On Being Wrong."

I can honestly say that watching this short video was to me an eye-opener to the point of being life-changing.  She asks us to shift our viewpoint from trying to "prove" what we already believed to be true, to thinking seriously about the possibility of our being wrong -- and frames it in a way I had honestly never considered.  I think that the first time I watched it, I spent the last half of it listening with my mouth hanging open in sheer astonishment.

You have wonder how much pain and suffering could be averted in the world if more people would entertain the possibility of their being wrong.  Right now, there are hostages being held in a mall in Kenya (and 68 known dead in the incident) because of men who are so convinced that their worldview is right that they are willing to slaughter innocent people in its name.

Maybe we have been, as a species, looking at things the wrong way round.  Maybe we shouldn't constantly be looking for proof for what we already believed.  Science (at its best) approaches the world tentatively, testing, probing, and wondering -- and constantly asking the question, "what if this model is wrong?"  I know we can't all be scientists, and that not all problems are scientific in nature, but the general approach -- always keeping in mind our own fallibility -- has a lot to recommend it.

The hair apparent

Just recently, there's been a claim making the rounds of social media sites by virtue of the "Forward," "Repost," and "Share" functions.  The original seems to have been written about a year and a half ago, but for some reason it's really been circulating in the last few weeks, which is odd given that it is composed of pure, unadulterated, USDA-Grade-A bullshit.

The claim?  That you shouldn't cut your hair (that includes facial hair, guys), because it's an "extension of your nervous system."

Naturally, we have to begin the whole thing with allegations that this critical information has been covered up by the government, because nothing is complete without a hint of conspiracy:

Our culture leads people to believe that hair style is a matter of personal preference, that hair style is a matter of fashion and/or convenience, and that how people wear their hair is simply a cosmetic issue. Back in the Viet Nam war however, an entirely different picture emerged, one that has been carefully covered up and hidden from public view. 

We then hear from "Sally" [name changed to protect privacy] whose [unnamed] husband worked as a psychologist for a VA hospital.  He uncovered something really strange in some reports of mysterious "government studies:"

Sally said, “I remember clearly an evening when my husband came back to our apartment on Doctor’s Circle carrying a thick official looking folder in his hands. Inside were hundreds of pages of certain studies commissioned by the government. He was in shock from the contents. What he read in those documents completely changed his life. From that moment on my conservative middle of the road husband grew his hair and beard and never cut them again. What is more, the VA Medical center let him do it, and other very conservative men in the staff followed his example. As I read the documents, I learned why.

It seems that during the Viet Nam War special forces in the war department had sent undercover experts to comb American Indian Reservations looking for talented scouts, for tough young men trained to move stealthily through rough terrain. They were especially looking for men with outstanding, almost supernatural, tracking abilities. Before being approached, these carefully selected men were extensively documented as experts in tracking and survival.

With the usual enticements, the well proven smooth phrases used to enroll new recruits, some of these Indian trackers were then enlisted. Once enlisted, an amazing thing happened. Whatever talents and skills they had possessed on the reservation seemed to mysteriously disappear, as recruit after recruit failed to perform as expected in the field.

Serious casualities [sic] and failures of performance led the government to contract expensive testing of these recruits, and this is what was found.

When questioned about their failure to perform as expected, the older recruits replied consistently that when they received their required military haircuts, they could no longer ‘sense’ the enemy, they could no longer access a ‘sixth sense’ , their ‘intuition’ no longer was reliable, they couldn’t ‘read’ subtle signs as well or access subtle extrasensory information.

This, we are told, is why "Indians keep their hair long."

But what is the science behind all of this?  Simple, they say; hair is actually a bunch of... nerves:

Each part of the body has highly sensitive work to perform for the survival and well being of the body as a whole. The body has a reason for every part of itself.

Hair is an extension of the nervous system, it can be correctly seen as exteriorized nerves, a type of highly-evolved ‘feelers’ or ‘antennae’ that transmit vast amounts of important information to the brain stem, the limbic system, and the neocortex.

Not only does hair in people, including facial hair in men, provide an information highway reaching the brain, hair also emits energy, the electromagnetic energy emitted by the brain into the outer environment. This has been seen in Kirlian photography when a person is photographed with long hair and then rephotographed after the hair is cut.

When hair is cut, receiving and sending transmissions to and from the environment are greatly hampered. This results in ‘numbing-out’.

Right!  Because highly complex cells, with nuclei and other organelles, and an intricate set of transport proteins, that are capable of sending and receiving electrical signals, are exactly the same thing as a bunch of dead strands of keratin.

In one sense -- one very limited sense -- they are correct.  Hairs on the skin do increase its sensitivity, and some animals (cats are an excellent example) use whiskers as tactile sensors.  But the idea that hair is acting as some kind of conduit for psychic energy is ridiculous.

And as for Kirlian photography, of course you get a different image if you remove someone's hair.  Kirlian photography is just a method for photographing the static electrical discharge from something (or someone) when you subject it (or him) to a high voltage at low current (the equivalent of a bad carpet shock).  Have you ever seen photographs of people who are holding on to a Van de Graaff generator?

This photograph would look completely different if she was bald.

And I suspect that the Dalai Lama might disagree with the statement that guys who are bald are "numbed out."

As for me, I have had long hair.  Really long, at one point in my life, like down to the middle of my back.  I also, at one point, had facial hair.  I did not notice a bit of difference in my Sensitivity To External Stimuli the day I simultaneously had my pony tail cut off, (and in fact, got what was damn near to a buzz cut) and shaved off all of my facial hair.  Mostly what I noticed is that getting ready for work in the morning took drastically less time, my head was cooler when the weather was hot, and I didn't have to deal with unmanageable snarls on windy days.  But I was no more in tune with "the Sixth Sense" when I had long hair than I am now (i.e. not at all), despite what all of the vague, uncited "government studies" allegedly show.

So that's our dose of pseudoscience for this morning.  Leaving your hair long so you can pick up, and broadcast, psychic signals.  I'd like to say that this will be the end of the discussion, but that may be a forlorn hope given that this article seems to be making the rounds (one Facebook link to it I saw had been "liked" over 5,000 times, and had hundreds of comments).  Be that as it may, I'm done discussing it, because I need to go take a shower and wash my nerve endings.