Skeptophilia (skep-to-fil-i-a) (n.) - the love of logical thought, skepticism, and thinking critically. Being an exploration of the applications of skeptical thinking to the world at large, with periodic excursions into linguistics, music, politics, cryptozoology, and why people keep seeing the face of Jesus on grilled cheese sandwiches.
Showing posts with label Ötzi. Show all posts
Showing posts with label Ötzi. Show all posts

Thursday, May 27, 2021

Meaningful ink

It's a little odd that someone as center-of-attention-phobic as I am has chosen something that is bound to garner close looks.  I'm referring to my tattoos, which are obvious and colorful -- and include a full sleeve, so they're a little hard to hide.

Virtually everyone who comments on them, however, is complimentary.  With good reason; my artist, James Spiers of Model Citizen Tattoos in Ithaca, New York, is -- in a word -- brilliant, and realized my vision of what I wanted just about perfectly.  

Just after it was finished

Not everyone's a fan, of course.  I was given the stink-eye by a sour-faced old lady in a local hardware store a while back, who informed me that having tattoos meant I was going to hell.

My response was, "Lady, that ship sailed years ago."

But if I do end up in hell because of my ink, I'll have a lot of company.  Not only is tattooing pretty common these days -- since I got my first one, about twenty years ago, it's gone from being an infrequent sight to just about everywhere -- humans have been decorating their bodies for a long time.  Ötzi "the Ice Man," a five-thousand-year-old body found frozen in glacial ice on the Austrian-Italian border, had 61 tattoos, mostly on his legs, arms, and back.  (Their significance is unknown.)  In historical times, tattooing has been observed in many cultures -- it was widespread in North and South American Indigenous people and throughout east Asia and Polynesia, which is probably how the tradition jumped to Europe in the eighteenth century (and explains its associations with sailors).

The role of self-expression in tattoos varies greatly from person to person.  Ask a dozen people why they chose to get inked and you'll get a dozen wildly different answers.  For me, it's in honor of my family and ethnic roots; the Celtic snake is for my wildlife-loving, half-Scottish father, the vines for my gardener mother.  But the reasons for getting tattooed are as varied as the designs are.

The reason all this comes up is because of a discovery that was described this week in the Journal of Archaeological Science of the oldest-known tattoo tools, some sharpened turkey leg and wing bones found near Fernvale, Tennessee that predate Ötzi by over five hundred years.  The hollow pointed tips of the bone tools still contained residue of black and red pigments, and the microscopic wear on the tips and edges match that found on tattoo tools found at other sites around the world.

The ordeal of being jabbed over and over with a sharpened bird bone, though, sounds a lot more painful than what I underwent, which was bad enough.

But it was worth it.  After I stopped screaming.

In any case, I find it fascinating how old the drive to adorn our bodies is, and also that the designs had (and have) such depth of meaning that people were willing to wear them permanently.  For myself, I've never regretted them for a moment; I'm proud of my ink, whatever the sour-faced little old ladies of the world might think of it.  And knowing that what I have is part of a tradition that goes back at least six thousand years gives me a connection to the rituals and culture of the past.

And for me, that's something to cherish.  Even if I do end up in hell because of it.

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Saber-toothed tigers.  Giant ground sloths.  Mastodons and woolly mammoths.  Enormous birds like the elephant bird and the moa.  North American camels, hippos, and rhinos.  Glyptodons, an armadillo relative as big as a Volkswagen Beetle with an enormous spiked club on the end of their tail.

What do they all have in common?  Besides being huge and cool?

They all went extinct, and all around the same time -- around 14,000 years ago.  Remnant populations persisted a while longer in some cases (there was a small herd of woolly mammoths on Wrangel Island in the Aleutians only four thousand years ago, for example), but these animals went from being the major fauna of North America, South America, Eurasia, and Australia to being completely gone in an astonishingly short time.

What caused their demise?

This week's Skeptophilia book of the week is The End of the Megafauna: The Fate of the World's Hugest, Fiercest, and Strangest Animals, by Ross MacPhee, which considers the question, and looks at various scenarios -- human overhunting, introduced disease, climatic shifts, catastrophes like meteor strikes or nearby supernova explosions.  Seeing how fast things can change is sobering, especially given that we are currently in the Sixth Great Extinction -- a recent paper said that current extinction rates are about the same as they were during the height of the Cretaceous-Tertiary Extinction 66 million years ago, which wiped out all the non-avian dinosaurs and a great many other species at the same time.  

Along the way we get to see beautiful depictions of these bizarre animals by artist Peter Schouten, giving us a glimpse of what this continent's wildlife would have looked like only fifteen thousand years ago.  It's a fascinating glimpse into a lost world, and an object lesson to the people currently creating our global environmental policy -- we're no more immune to the consequences of environmental devastation as the ground sloths and glyptodons were.

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


Saturday, May 2, 2020

The stories the bones tell

The field of forensic anthropology has made amazing strides in the past decades.  Fifty years ago, about all we could count on was identification of gender and suspected ethnic origin, and an estimate of age at death.  Now we are able to use data from bones to reconstruct much of the person's life history.

And sometimes, that history is pretty unpleasant.

One of the first cases in which the entire arsenal of sophisticated analytical techniques was used was "Ötzi," the "Ice Man" of the Alps whose body had been hidden underneath the edge of a glacier in the Italian/Austrian Alps for over five thousand years.  What we now know about Ötzi and his origins is kind of mind-blowing.  From pollen grains found in his clothing, we know he died in early summer, but his last meal contains "einkorn" wheat and sloes, both of which are harvested in the fall -- leading to the conclusion that his people knew how to preserve food over the winter.  He had no less than 61 tattoos, all geometrical and presumably symbolic, perhaps representing magical rituals.  (Or maybe, like me, he had ink just because he thought it was cool.)  He had a copper knife and particles of copper residue in his hair, suggesting he or someone he lived very near was involved in copper smelting.  From an isotopic analysis of his tooth enamel, we even know a bit of his life history -- he appears to have spent his childhood near the present town of Feldthurns, Italy, but at some point in his youth went to a valley fifty kilometers farther north.

Things took a grim turn, however, when the forensic anthropologists started looking into how he died.  Initially it was suspected he'd died in a fall down the hillside, as he had cracked ribs and surface bruises -- possibly resulting in his being knocked unconscious and dying of exposure.  But the truth seems a good bit harsher.  Ötzi has an arrowhead lodged in his upper chest, near the upper lobe of his left lung.  This wasn't an old injury; his shirt had a tear at the same place as the entry wound.  The conclusion from the placement and apparent trajectory of the arrow is that it would have severed arteries in his left pectoral muscle, leading to his death from blood loss.

We humans have been doing bad things to each other for a very, very long time.

If you needed further proof of this, consider the paper in Current Biology that came out two days ago, sent to me by a friend and loyal reader of Skeptophilia, and the reason I've gone into this rather morbid subject today.  In "Origin and Health Status of First-Generation Africans from Early Colonial Mexico," by a team led by Rodrigo Barquera of the Department of Archaeogenetics of the Max Planck Institute for the Science of Human History, we hear about three sixteenth-century skeletons recently found in Mexico that tell a horrific tale of abduction, slavery, and abuse.


The three individuals are clearly of African origin, based not only on skeletal morphology but on tooth-filing patterns that are characteristic of the Fang people of Equatorial Guinea, Cameroon, and Gabon.  Not only that, but one of them had a characteristically African strain of hepatitis B, and another had remnants of the bacteria species (Treponema pallidum ssp. pertinue) that causes the horrific tropical disease yaws (if you choose to investigate further into this disease, do not look at the photographs unless you have a strong stomach -- you have been warned), which is most common in west and central Africa.  In fact, the current presence of yaws in Latin America is almost certainly the result of its having been brought in by the African slave trade.

It only gets worse when you read about the evidence of abuse these skeletons show.  The authors write:
Osteological analyses of the three individuals reveal evidence suggesting a life experience of conflict and hardship.  Individual ML8 SL 150 (SJN001) was found with five buck shots and two healing needles (used in traditional medicine) in the thoracic cavity, as well as gunshot wounds.  Both SJN001 and SJN003 (ML8 SLU9B 296) presented porotic hyperostosis and cribra orbitalia, two pathological changes associated with a skeletal response to nutritionally inadequate diets, anemia, parasitic infectious diseases, and blood loss.  Individual ML8 San José 214 (SJN002) displayed several skeletal changes associated with intense labor and heavy manual activity, including enthesopathies on the clavicle and scapulae as well as osteophytic lipping on the joint surfaces with some additional joint contour deformation at the sternoclavicular joint of the clavicle.  Additionally, he suffered from a poorly aligned complete fracture in the right fibula and tibia, resulting in associated joint changes of the knee, including osteochondritis dissecans of the distal femoral surface with joint contour deformation and associated osteophytic lipping of the articular surface margin.  Furthermore, this individual displayed osteoarthrosis of the lumbar vertebrae in addition to signs of deficient oral health and cut marks on the frontal bone.
"All of us involved in the study were highly touched by the whole story about these three persons, everything that they went through," study lead author Barquera said.  "Knowing that they were first-generation enslaved Africans brings a new perspective on the whole subject because you know they were abducted.  You're seeing all these maltreatment signatures on the bones that came with this abduction, what they suffered for the rest of their lives."

And "the rest of their lives" turned out to be short.  All three of the individuals died in their early or mid-twenties.  Whether they died of disease, malnutrition, murder, or the cumulative abuse they'd suffered isn't known, because they show signs consistent with all possible combinations of the above.

All of it brings home once again the accuracy of Thomas Hobbes's words in his book Leviathan, wherein he characterizes the lives of our ancestors as having been "solitary, poor, nasty, brutish, and short."  It's true that a lot of the poorness and nastiness was circumstantial, and due to bad diet and the prevalence of (then-untreatable) diseases.

But a frightening piece of the "nasty, brutish, and short" part was due to the horrible mistreatment of humans by other humans, often for no better reason than territory, power, rivalries, and tribalism.  I wish I could tell you we've grown beyond all that.  I mean, there's been progress; I wouldn't trade my life here in the 21st century for what Ötzi or the owners of the Mexican skeletons endured.  But that insularity, suspicion, and tribalism is deep within our cultural genes, needing little more than a moment's adversity to bring it to the surface.

Bringing to mind another quote, this one from the Latin playwright Plautus -- Homo lupus homini est (man is a wolf to men).

Which, in my opinion, is slanderous toward the wolves.  They may be fierce, but I've yet to see a wolf enslave another wolf.  On the whole, their society seems a great deal more peaceable than ours is.

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This week's Skeptophilia book recommendation is an important read for any of you who, like me, (1) like running, cycling, and weight lifting, and (2) have had repeated injuries.

Christie Aschwanden's new book Good to Go: What the Athlete in All of Us Can Learn from the Strange Science of Recovery goes through all the recommendations -- good and bad, sensible and bizarre -- that world-class athletes have made to help us less-elite types recover from the injuries we incur.  As you might expect, some of them work, and some of them are worse than useless -- and Aschwanden will help you to sort the wheat from the chaff.

The fun part of this is that Aschwanden not only looked at the serious scientific research, she tried some of these "cures" on herself.  You'll find out the results, described in detail brought to life by her lucid writing, and maybe it'll help you find some good ways of handling your own aches and pains -- and avoid the ones that are worthless.

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