The Teachable Moment: A Feather

When I retired from college science teaching, I thought I would continue teaching in an informal capacity. I have continued to write books and blog essays (you are reading one). I also have two grandchildren who are at the discover-the-wonder-of-the-world stage of childhood. I thought that I would impart to them fragments of my vast knowledge about the world.

Of course that is not exactly how it worked. They (ages 7 and 5) have a nearly unlimited capacity to ignore whatever anyone is saying to them, even mid-sentence. What I had to do instead was to wait for a teachable moment, when they showed spontaneous interest in something, or could be led into it.

They were playing with their nature treasure boxes, which included pigeon feathers. (Pigeons make up most of the bird biomass of Alsace.) These particular feathers were fine and delicate. I said I had a story about feathers that my mother (their great-grandmother) told me. Lena immediately said that people used to dip quills in ink to write. But, I said, they had pens by the time my mother was a little girl. Instead, I told them about how my grandfather, their great-great-grandfather, used a turkey feather to put medicine on my Mom’s face. This is not what they were expecting.

My mother, as a little girl, got into the natural world in Oklahoma by brushing poison ivy (Toxicodendron radicans) against her face. Of course, her face swelled up dangerously. Her father went to town in his wagon (other people had cars, but not him) to get medicine, which was probably some ointment with mercury or something in it. He used a turkey feather to gently apply it to my mother’s face. It was important to not break the skin, which would leave a scar, and also allow bacteria to infect the skin. The in my granddaughter’s box opened up a discussion of infection.

And of allergies. Poison ivy is not poison. Urushiol, found also in poison oak (T. diversilobum) and poison sumac (T. vernix) is not poisonous. It just provokes a massive allergic reaction in most people. But not in everyone. Some people do not react to urushiol at all. One of the main characteristics of allergies is that they differ from one person to the next. I told them the story of the girl with a peanut allergy who died after her boyfriend ate a candy bar and kissed her. (I heard this on the news, but have been unable to trace a source for it.) Most of us do not have peanut allergies. But Lena knew a distant cousin, on the French side of the family, who did.

Urushiol does not cause allergic reactions in all mammals. Deer eat the leaves, and squirrels eat the berries. Horses can eat the leaves. The urushiol comes out in their sweat and you can get it on your legs from riding the horse. I do not know if dogs and cats can get poison ivy, since they are primarily carnivores; but if your dog runs around in poison ivy and then runs up to you, beware of giving the dog a hug.

But it was not just science education; it was also cultural education. An Asian species, T. vernicifluum, produces sap that is used in the production of Chinese and Japanese lacquerware.

All this biology education, just from a feather in my granddaughter’s nature box. She showed genuine interest and surprise. I could easily have missed this teachable moment, had I not been watching for it.

Connections? Real and Imagined

James Burke’s Connections  and its many spinoffs were very popular on British television and American educational channels a couple of decades ago. They were certainly entertaining and thought-provoking in the way they drew connections between events of past centuries and things that have happened in the modern world. The implication is of cause and effect. But is this an illusion?

 

To quote Wikipedia: “Connections explores an “Alternative View of Change” (the subtitle of the series) that rejects the conventional linear view of historical progress. Burke contends that one cannot consider the development of any particular piece of the modern world in isolation. Rather, the entire gestalt of the modern world is the result of a web of interconnected events, each one consisting of a person or group acting for reasons of their own motivations (e.g., profit, curiosity, religion) with no concept of the final, modern result to which the actions of either them or their contemporaries would lead. The interplay of the results of these isolated events is what drives history and innovation, and is also the main focus of the series and its sequels.”

To this point, Burke’s view can hardly be questioned. One cannot presume or even imagine that people in past centuries could predict the consequences of their discoveries.

Wikipedia continues, “To demonstrate this view, Burke begins each episode with a particular event or innovation in the past and traces the path from that event through a series of seemingly unrelated connections to a fundamental and essential aspect of the modern world.”

To me, the key point is seemingly unconnected. Many of the purported connections are not real—not just that there is no direct, but not even any indirect, connection. The purported connections were most likely neither functional nor phylogenetic. That is, they were not processes that worked the same way, nor was one descended from the other the way amphibians were the descendants of fish. It may just be a similarity of form that Burke noticed, and nobody else could see until Burke, with his inimitable style, reified them. I had the intuition, when I watched the series (which my intelligent daughter loved), that it was all imaginary. And perhaps, I now realize, I might have been right.

Burke’s contribution was in getting his viewers excited and to use their imaginations; to ask, “I wonder if…” But this is not the end of investigation; it is merely the beginning. Not less important for it, of course.

Sexual Selection and Music: Nannerl's Story

 

Something to think about (music and sex) as spring arrives.

Back when I was taking music courses as an undergraduate at the University of California, Santa Barbara, everyone was wondering why the great musicians were male. Not all of them, of course; two female composers, Thea Musgrave and Emma Lou Diemer, were on our faculty. Clara Schumann, Robert’s wife, was an example from the nineteenth century. More recently, there was Dawn Upshaw. But this list is very short, compared to the list of famous male composers.

It is easy to attribute this solely to male oppression of females. Male domination in music is just another example of male domination of society in general.

But there is another factor at work. Males often show off to other males, and to potential female mates, in the hopes of increasing their mating opportunities, within or outside of a pair-bond, in humans as in many other animal species. While this often takes destructive forms, such as war and abuse, it can also take creative forms, especially in big-brained humans. Artistic or intellectual creativity is often a way in which males can show off. We all know of the spectacular paintings on European cave walls. But those same caves echoed the music of bone flutes and drums by which musicians (perhaps mostly male) enthralled their congregations.

This happens more often males than females because evolutionary fitness in males often results largely from the number of mates, while this is not true so much in females. For a man, reproduction can consist of a single sex act, while for a woman the whole process of pregnancy, childbirth, and raising children may be her burden alone. Thankfully, there are many of us men who are nurturing and faithful rather than rapacious. But a male can have hundreds of offspring (or thousands, for Genghis Khan) while no woman can have that many. The inevitable result of sexual competition is that some men have lots of offspring, while most of the others compete with one another for whatever women are left.

Women also compete with one another to have the best males as the fathers of their children. Also, women need to have musical ability in order to recognize it in men. Alma Schindler, herself only a passable musician, nevertheless recognized the genius of Gustav Mahler and maneuvered herself into being his wife. Nevertheless, sexual competition is stronger in men than in women.

Sexual selection must have chosen whatever genetic basis there is for musical ability, in men more than in women. But that genetic basis cannot be found only in men. Men have a Y chromosome, which is largely a lump of useless DNA. The genetic basis of musical proficiency must be found on either the X chromosome or the non-sexual chromosomes, and this means that it shows up perhaps just as frequently in girls as in boys. In the absence of ongoing sexual election, musical ability, even if it began as a male characteristic, would soon equalize itself between the sexes.

And this is why even spectacular musical ability shows up in females even if it started in males thousands of years ago.

Everyone has heard of Wolfgang Amadeus Mozart, who was clearly a musical genius. But did you know he had a sister who was perhaps just as gifted as he was? She was a superb keyboardist, and her father Leopold took her on concert tours throughout Europe at the same time as he took young Wolfgang. Audiences were perhaps even more impressed with the beautiful Maria Anna Mozart (nicknamed Nannerl) than with her little brother who could do musical tricks. But her father convinced her that her only chance for success was as a performer and teacher, and as a wife. While she continued teaching and performing until her own death, decades later than Wolfgang’s, none of her compositions survive. One movie I saw (of several that have been made) showed her, at about fifteen years old, sadly burning her compositions in the family fireplace. It turns out Wolfgang was a genius; but perhaps Nannerl was also. We will never know.

 

 

Natural and sexual selection, drivers of human evolution, are not destiny. The adaptations they provide must be continually maintained by culture, as I explained above. As culture evolves, the forces of selection can change. Thankfully they are already doing so. When I was in high school, most brass players in school bands were boys, except the very competent Linda. The girls chose flute and clarinet. When I was in California State Honor Band in 1974, I was the last chair baritone horn player. The first chair player (in the concert band) was a black girl. She was really good. I admired her for her pioneering spirit on her instrument and for the way she represented her ethnicity. This was an important part of my development, coming as I did from a racist family.

There are forces that try to suppress opportunities for women. A few years ago, there was a scandal among the Southern Baptists because male leaders often seduced females without serious punishment. The church’s response? There were a few women in positions of Southern Baptist leadership. The church removed them and forbade women to be in such positions at all.

But even religion cannot completely hide female talent. Probably every church choir director has heard of composer Natalie Sleeth. Things look pretty grim for women in conservative religion, but I suspect things will never get as bad as a Margaret Atwood novel.

Department of War

Most of us have grown up hearing about DOD (Department of Defense), and this is still how it is universally known. However, the Secretary of Defense Pete Hegseth has decided to rename it the Department of War, and that is how you will find it on the official federal website (www.war.gov). The index of departments and agencies still lists it as Defense, but its leaders consider it the Department of War.

 

 

It is difficult to overestimate the importance of this change, to America, and in the eyes of the world.

Consider how one would evaluate the effectiveness of a federal agency. If it is the Department of Defense, the question we need to answer is, Is America being adequately defended? I am not including those tasks that have been assigned to the Department of Homeland Security. Since most Americans do not live in fear of foreign aggression, we could conclude that DOD is doing its job and the Secretary of Defense is doing his.

But if we call it Department of War, then this department has to be fighting a war somewhere, or else it is not doing its job. If America is not fighting a war, then the War Department is effectively inoperative. This is why Pete Hegseth believes that, at any given time, America must be fighting at least one war. Otherwise, Hegseth is not doing his job.

People often ask if there is an Iran exit strategy. If not, what is it that we are trying to accomplish? But that is not the right question. We need to have at least one war, and from this war we must not have an exit strategy. We must be permanently at war.

This is what our supposed allies think when they see us. We are a nation that must be permanently at war. And we must find someone to conduct war against. Right now it is Iran. Who will it be next? Will it still be Iran five years from now? Or will we find another target? But we must have one or more targets or else we, as a nation, are failures.

That, at least, must be the view of Trump and Hegseth.

The Evolution of Weirdness

Weirdness cannot be defined, but whatever it is, it evolved, which means it provided an evolutionary advantage at many times during human evolution.

One reason it cannot be defined is that what one culture, in space or time, considers weird, another culture may not. One example is psychopaths. In most cultures, most people dislike psychopaths. They are very, very smart, and almost always use their intelligence and their charisma to advance their own interests. We tend to think of the psychopathic mass murderers and other criminals, but many psychopaths (who constitute about one percent of the population) pass as ordinary people and may be surprised by their own (often genetically-based) diagnosis. A lot of politicians and preachers are psychopaths, who cultivate the goodwill of others for their own financial or sexual benefits. And they also like to shame you for suspecting that they are committing acts of evil. It takes highly-developed social intelligence to recognize a psychopath. See the book by Kevin Dutton: The Wisdom of Psychopaths: What Saints, Spies, and Serial Killers Can Teach Us about Success. New York: FSG, 2012.

The success of psychopaths depends on the social situation. Adolf Hitler was a psychopath, and he got millions of people to follow him. After Germany lost World War Two, many Germans felt mentally liberated, and wondered, What were we thinking, to follow this jerk? Germany was not a nation of psychopaths, but maybe the Nazis were a party of psychopaths.

But there are many other ways of being weird. Most of us are a little weird in a few ways. But I mean clinical weirdness. One example is Williams Syndrome [https://en.wikipedia.org/wiki/Williams_syndrome]. People with Williams Syndrome have distinctive facial characteristics, and medical problems such as heart conditions. They have diminished intelligence, overall. They are extremely talkative, and effusively express their emotions. They are almost always cheerful. I have never knowingly met one but I get the impression that it would be really hard to not like them.

One word you would not associate with Williams Syndrome is suspicious. In order to become socially powerful, within your society, you have to be suspicious of the motives of other people in your society, and certainly of people in other societies. People with Williams Syndrome will walk right up to you and trust you. This is socially awkward. But openness and the willingness to trust is an essential component of altruism, of social bonding. It’s just that these people have too much of a good thing.

Another reason weirdness cannot be defined is that each kind of weirdness has its own social and genetic basis. Williams Syndrome is associated with a specific genetic deletion that affects a specific part of the brain. There is no set of terms in any language that exactly matches the symptoms of this deletion. And, in fact, characteristics resulting from mutations can be highly modified by upbringing and social circumstances. I am thinking of a person who acts as if she has Williams Syndrome, but who looks normal, and is brilliant.

Throughout human evolution, behavior patterns have sometimes been useful and sometimes not. Since each behavior has a different set of causes, human behavior has proven to be immensely variable. This has happened not because natural selection has done a bad job on human behavior, but because both the source and the target of human behavior is constantly shifting.

 

We can be glad we have empathy and altruism in the human species. And maybe Williams Syndrome is the price we pay for it.

 

Next, I will write about the evolution of nerds. Or not. Maybe I am a bit too close to the subject to be objective.

Floaters: An American Health Care Horror Story

Actually, it is not a horror story, but a story of dysfunction. It is one more reason why American health care is so expensive.

Ocular floaters are caused by clumps of collagen that form in the vitreous humor of the eyes. They cast shadows on the retina. This usually happens in older people, but I had a lot of floaters when I was a kid. I looked up into the clear California skies and wondered what those gelatinous blobs were. I spent most of my life ignoring them.

But since they become more common with age, they began to bother me. When I retired and started Medicare, I decided to do something about them. A local ophthalmology office advertised that they could eliminate floaters from your eyes. So I decided to do it. Laser was used to disperse the clumps of collagen.

It took five sessions. I do not recall paying anything for them, but Medicare paid a lot, I am sure, though of course I never saw these bills.

To begin with, five sessions were not necessary.

• In the first session, my eyes were examined by the ophthalmologist who advertised that he could treat floaters. But after he examined my eyes, he said that it was actually another ophthalmologist at his clinic who did it. Nobody told me this when I made the appointment.
• In the second session, another ophthalmologist looked for floaters and found them.
• In the third session, all I did was sign up for the use of the laser machine.
• In the fourth session, the ophthalmologist shot lasers at the floaters as he yelped like a cowboy on a bronco. (This was in Oklahoma.) In the few weeks afterwards, I could still see the floaters.
• In the fifth session, the ophthalmologist examined my eyes and old me the floaters were gone. I said I could still see them, but he told me I was wrong.

This brings me to the second point. The treatment, as far as I can tell, does not work. When I moved to France, I decided to not think about it anymore. But I developed diabetes, which requires annual retinal exams. During one of these exams, I asked the ophthalmologist about laser treatment of floaters. He said that they don’t do this in France, because it doesn’t work. I have since found that laser treatment is used only in rare and severe cases.

The worthless floater treatments I had in America took a lot of my time, but not money. But it cost the American taxpayers plenty. This is money that Europeans can spend on better health care than in America. I wonder how much American health care is weighed down by unnecessary and ineffective treatments.

Biblical Deserts

There are many references in the Bible to deserts, none of them good. One of them is an Old Testament prophecy that Handel used in The Messiah: Make straight in the desert a highway for our God (Isaiah 40:3).

Clearly, Old Testament deserts are things that we should get rid of. And the Old Testament describes the reclamation of desert areas as the work of God. One of these passages follows immediately after the above quote.

When the poor and needy seek water, and there is none, and their tongue is parched with thirst, I the Lord will answer them, I the God of Israel will not forsake them. I will open rivers on the bare heights and fountains in the midst of valleys; I will make the wilderness a pool of water, and the dry land springs of water. I will put in the wilderness the cedar, the acacia, the myrtle, and the olive; I will set in the desert the cypress, the plane, and the pine together, that men may see and know, may consider and understand together, that the hand of the Lord has done this, the Holy One of Israel has created it (Isaiah 41: 17-20).

The deserts, or wilderness areas, are not to be confused with thriving, highly-evolved desert ecosystems. In natural deserts, the plants have many exquisite adaptations to deal with heat and drought. Succulent plants store water, desert bushes have very deep roots, and desert plants even have special forms of photosynthesis that allow them to make food under all but the driest conditions. Some desert plants are small and tender, and have astonishing flowers, and they appear totally out of place in a dry desert. The way they survive is by living their whole lives, from seed to seed, in the brief rainy season. These are the deserts we need to protect, such as in Saguaro National Park (Arizona) or Anza-Borrego State Park in California. These are not the deserts to which the Bible refers.

 

 

The deserts of the Bible are the lands that have been corrupted by human civilization. Poor farming practices swept away the natural plant cover and caused soil erosion, leaving a barren landscape. That is why cities that were once thriving consisted only of collapsed walls surrounded by bare soil. This is what the earliest Sumerian cities looked like even at the time Isaiah wrote his prophecy. There was plenty of degraded land even around Jerusalem that everyone who heard Isaiah’s prophecy could readily see. To this day, most of the land around the Mediterranean remains partially degraded from millennia of human abuse. Today we think of Italy and Greece as dry shrublands; but they used to be, according to ancient writings, covered with thick forests.

If you are someone who is involved in any stage of land reclamation, to take a landscape that has been devastated by decades or centuries or millennia of human mismanagement, and turn it into a thriving ecosystem, you are doing some of God’s work. Although I do not believe that the modern nation of Israel is in fact God’s own special country, it is obvious that modern Israel has done a lot of reclamation, making what had been a devastated landscape bloom. They have been pioneers of soil conservation and dry land agriculture. Drip irrigation was invented in Israel. The joke goes: on the cover of the birthday card it says, In honor of your birthday, a tree has been planted in Israel. Inside the card it says, Wednesday is your day to water it.

The lands that have been reclaimed from human-produced deserts do not look like natural deserts. Just read the list of plant species in the passage above. Cedar, acacia, myrtle, olive, cypress, plane, pine. There is no natural ecosystem where you will find all of these trees together. They have to be planted in a garden that has displaced the degraded land.

None of this is miraculous. It is just good, hard work based on scientific studies (many of them Israeli). Isaiah says that God has done this. But it was not miraculous. God works through us, in this case through scientists and farmers. In order to see it as God’s work, you have to do what Isaiah said: to see and know, to consider and understand together. A quick glance at the trees is not good enough to see the work of God through mankind.