Language in time

I recently finished reading Guy Deutscher’s book The Unfolding of Language: An Evolutionary Tour of Mankind’s Greatest Invention. This book was a pleasure to read, and taught me a lot about how languages change over time. Not only is it informative and clearly written, it’s witty and sometimes hilarious. (Early in the book, when he used the word “cactus” with Latin noun endings to illustrate case systems for nouns [“O cacte!”] I knew I was in for a treat.)

Deutscher draws on examples from many languages to explain the types of change that happen to a language over time, driven by three motives: economy, expressiveness, and analogy. The book explained some things that I had always wondered about—for example, why some languages have such complicated case systems for nouns. For instance, instead of having only the ending “s” or “es” to mark a plural (book, books) and ‘s to mark possession (the book’s call number) as English does, a language with more noun cases, like Latin or Slovene, will have different endings for nouns depending on whether you’re saying “The book is heavy” or “I read the book” or “He asked me about the book”; in Finnish it gets even more complicated. I knew that these systems were not dreamed up to torment people who wanted to learn the language, and that there must be some logic behind them, but I didn’t know how they came about.

He also investigates the puzzle of why language seems always to be deteriorating; it seems unlikely that there really was some golden age of perfection from which language has since declined. He explains the processes of renewal and growth in language, present but not as obvious as those of decay. Toward the end of the book he discusses whether the two tendencies balance each other or whether there really is a trend toward less complex languages (and why). The final chapter describes how language could have grown from very simple elements (action words and words for things) into its present complexities. I enjoyed the big-picture view, and the many interesting tidbits of language history that I picked up along the way. All in all, I highly recommend this book.

Memory and identity

Here’s a thoughtful article from Slate about memory and identity. The writer describes his own experience of temporary memory loss after a car accident, and discusses a recent book by Jonathan Cott about his experience of memory loss after ECT (electroconvulsive therapy) for depression. Most of us don’t face as stark a choice as Cott did about whether it was better to be himself and depressed, or to get rid of the depression at the cost of his memories and hence his sense of self (and I can really sympathize with him over the choice he faced and the things he lost). But I think the question sheds some light on decisions that people make about psychopharmaceuticals, although the changes due to drugs are probably reversible, whereas Cott’s memory loss due to ECT is not. (And having contemplated but not used SSRIs for depression, I find questions of identity in this context particularly interesting.) The discussion of memory loss as it relates to the spiritual concept of “living in the now” was interesting too.

http://www.slate.com/articles/health_and_science/medical_examiner/2005/10/living_memento.html

Oxygen and the rise of mammals

Here’s a story about the link between increasing oxygen levels in Earth’s atmosphere and the rise of mammals. This goes into a lot of detail about the geological processes that caused the higher oxygen levels; when the Atlantic Ocean formed, more carbon washed into the sea along the new coastline. This kept the carbon out of the atmosphere; the less carbon there was in the atmosphere, the more oxygen there was. This also goes into the details about why mammals need higher levels of atmospheric oxygen. It’s a pretty cool story about the intricate connections between geology and biology.

http://www.nature.com/news/2005/050926/full/050926-13.html

Lucky to be here: How common are life and consciousness?

We live in an era when astronomers are making amazing discoveries about planets around other stars than our sun. The prospects are good that the science of comparative planetary systems is going to keep growing. In this heady atmosphere, the question of whether there is life in these other systems begins to assume even more importance. As we find life in more and more extreme environments on Earth, we realize that other planets might be more hospitable to simple forms of life than we had realized. And yet, there are those who believe that while life may be widespread in the universe, complex organisms like ourselves may be very rare. In 2000, Peter D. Ward and Donald Brownlee published Rare Earth: Why Complex Life Is Uncommon in the Universe, which lays out the case for this viewpoint.

Habitable zones of all kinds

When I started reading this book, I knew some of the constraints on planets that can harbor life. They must be not too hot and not too cold, but rather just right, like the baby bear’s porridge; as far as we can tell, liquid water is crucial and so the temperature somewhere on the planet must support liquid water. The “habitable zone” around a star depends on what type of star it is; a hotter star will have the right temperatures further out from the star, and a cooler star will have them closer in. A hotter star will not live long enough to provide the time that it took on Earth for complex organisms like you and me to arise. (Hotter stars are generally more massive, and the most massive stars live for only hundreds of thousands of years, far less time than the billions of years of evolutionary history on this planet.)

However, the concept of habitable zones is a lot more complicated than that. It turns out that the smaller stars might be too cool, but not in quite the way you’d think. Planets could maintain the right temperature around these stars, but only if their orbit is so close to the star that they become tidally locked, like the moon is with the Earth. If that happens, the planet turns only one face to its sun all the time, leaving the other side too cold and playing havoc with the distribution of thermal energy over the surface.

Habitable zones also change with time as the energy output of a star changes (generally a slow increase), so a planet must occupy not just a habitable zone but a continuously habitable zone. As the star brightens, the habitable zone moves outward, and so a planet that is too near the inner edge will become too hot over time. (Also the ability of a planet to cope with this kind of change depends on chemistry, as described below.)

Habitable zones vary depending on life form. Many of the extremophiles that thrive in harsh environments on Earth are microbes, and they survive in places that would kill us hominids. (At a talk here at Indiana University last year, astronomer and extrasolar planet specialist Geoffrey Marcy described the robustness of bacteria by saying, “When hell freezes over, the bacteria will party.”) So the habitable zone for microbes is much larger than that for animals.

There are habitable zones on larger scales too. For example, there are better and worse places in the galaxy for the evolution of complex life. In star clusters and near the galactic center, there is enough electromagnetic radiation (not just light, but more energetic forms like UV and gamma rays) to disrupt emerging life processes. And the more stars are nearby, the greater the chance that a planet will be pasteurized by the radiation from a nearby supernova.

On the other hand, if you’re too far out from the galactic center, there might not be enough heavy elements (heavy meaning in this case heavier than hydrogen and helium). You need heavy elements to form a planet in the first place, not to mention the life forms to inhabit it. So you do need supernovae explosions to scatter the elements synthesized inside a star; you just don’t want them too close or too frequent. In short, being on the galactic fringes might provide too sparse an environment for the evolution of complex life.

And as if all that were not enough, not all galaxies are equally likely to be hospitable to life. Spiral galaxies like our own have multiple waves of star formation, so that later stars incorporate some of the material that was made in earlier generations but was missing from the galaxy until those earlier stars made it. This material is Carl Sagan’s famed “star stuff” that makes up you and me and the ground beneath our feet. Elliptical galaxies, on the other hand, are believed to have much more static stellar populations, and so perhaps lack this factor.

But wait, there’s more

Even if a planet is appropriately placed, there are a host of other factors to consider. The size of the planet is important: too small, and it lacks sufficient gravity to hang onto an atmosphere; too large, and it becomes a gravitational magnet for asteroid strikes. The composition of the planet has to be just right, not too much water (you need both land and sea) and not too much CO2 (so that there is not a runaway greenhouse effect). A planet closer to its sun might not have enough of the elements that go into making up life, because these easily evaporated elements (called volatiles) can be blown away by the solar wind.

Large outer planets are something of a mixed blessing, though.
Jupiter and Saturn might have played a vital role in scattering volatile-rich materials into the inner solar system. It’s possible that some precursors of life came in from the outer solar system as well. Large outer planets are something of a mixed blessing, though. For Earth, they provide a shield of sorts by gravitationally attracting some objects that might otherwise make their way into the inner solar system and hit Earth. On the other hand, they can disturb the orbits of comets and send them into the inner solar system. In a system that had more giant planets, or giants that are closer to the star, gravitational forces could knock hapless smaller planets out of a habitable zone and possibly even eject them from the system altogether.

The chemical composition of Earth is crucial in a variety of ways. To take one example, the minerals in the rocks can affect the content of oxygen in the air (more iron, for example, would react with oxygen and remove it from the atmosphere), and the appearance of large quantities of oxygen in the atmosphere gave complex life on Earth a major boost. There’s also something called the CO2-rock cycle, which helps stabilize planetary temperatures by shuttling carbon dioxide between surface rocks and the atmosphere depending on the temperature. (I think this process is too slow to cope with the huge amounts of CO2 that have been going into the atmosphere in industrial times, but it could help regulate temperatures over a longer time scale of slow change, like the brightening of a star described above.)

Earth’s magnetic field and its plate tectonics rely in complicated ways on its chemical composition, and both are crucial for the existence of complex life as we know it. The magnetic field arises because Earth has a partially liquid iron/nickel core (not only does it possess sufficient nickel and iron; it is big enough for them to gravitate toward the center of the planet). Having a magnetic field provides a buffer that helps protect the Earth’s inhabitants from charged particles coming in from the sun and from outer space.

The working of plate tectonics relies on radioactive elements deep in the Earth’s innards that keep the temperatures higher than they would be otherwise, and on the existence of a thin crust that is light enough to float on the material below. The manifestations of plate tectonics with which we’re probably most familiar are volcanoes and earthquakes. As destructive as these two events so often are, they recycle the elements in the Earth’s atmosphere in ways that are essential for life. Furthermore, volcanoes played an important role early in the Earth’s history. The early Earth was stripped of its first atmosphere and gained another through outgassing from volcanoes. Volcanoes also released the greenhouse gases that kept the “snowball Earth” phase from being permanent. Also, the dust that went up into the atmosphere from these volcanoes settled on the ice and then fertilized the oceans when the ice finally melted, resulting in an oxygen bloom that fostered the spread of life.

Some factors in the timing and nature of the evolution of life on Earth may also be crucial on other planets. Impacts from large objects, for example, are important, although their role is a bit ambiguous. On the one hand, a planet-wide catastrophe can wipe out any complex life that has managed to evolve. On the other hand, the terrestrial catastrophe that did in the dinosaurs also gave mammals their chance to evolve into something like us. In general, on Earth mass extinctions have been followed by an eventual increase in the diversity of life forms.

And now for the meaning…

The ideas presented by Ward and Brownlee are of course open to debate, and there has been quite a bit of discussion (see, for example, the debate on space.com from July 2002). While I feel that Ward and Brownlee make a good case, I realize that we’re generalizing from a sample of one life-bearing planet. We don’t have a good way of being sure yet what is essential and what is arbitrary in the way life arose and evolved on Earth, so we cannot be sure yet what the answer is.

In the absence of firm answers, it might make sense to withhold judgement on how the Rare Earth hypothesis or any other hypotheses about life on other worlds affects our beliefs or values. But since this subject touches on perennially vital questions of who we are and our cosmic context, we already have quite a set of beliefs and values built up, and naturally we try to figure out how (and if) the new information fits into what we already think. This is a very delicate area, to my mind, where science and religion must somehow co-exist. (I use “religion” to refer not only to organized institutions, but also to any system of beliefs involving values, meaning, and ethics.)

The methods by which we seek to answer our questions about the frequency of complex life in the universe are scientific, and there are observations and discoveries that could falsify the rare earth hypothesis. (Falsifiability is often considered to be a hallmark of science.) But it interest us in part because of its connection to existential questions of meaning and purpose. The facts that come from the scientific method can and sometimes do influence our religious beliefs. The Rare Earth hypothesis is an interesting example of this, because in some ways it is like a Rorschach test. Based partly on the facts but partly on personality, personal history, cultural environment, and other factors, people take very different messages from the science to date.

For those who believe that humans will one day roam the galaxy, and that life will somehow always find a way, the Rare Earth hypothesis is either a dousing with cold water or a call to arms. Myself, I’m highly skeptical of the optimism that assumes that the universe overall is friendly to life; some days it doesn’t even look like this planet is unambiguously friendly to complex life.

There are probably others who take it as evidence for the existence of God, because so many things have to happen just so for human life to arise. However, it did happen here, and science is by and large able to explain how it happened without invoking a deity. So this doesn’t hold water for me. On the other end of the spectrum, many of the scientific truths discovered in the twentieth century have been interpreted (and distorted, in my view, but that’s another story) to support a view of life as essentially meaningless and random.

My own take on it is very different. First, even if it turns out that some of the factors that figured in the rise of intelligent life on Earth turn out not to be absolute requirements, they were the path that led to us. We would not be here if any of a multitude of things, small and large, had gone differently. I tend to agree with Ward and Brownlee that there are not likely to be many planets with complex life. But even if there are, we are still the result of a complex and contingent history. Not only that, but we’re able to figure out significant portions of this history, despite the fact that collectively as a species we inhabit such a tiny fraction of that history.

These facts lead me to feel a deep appreciation and gratitude for the fact that I am here now. They inform my belief that to be a conscious being on this planet at this time is a blessing, in the sense that it is something wonderful and quite possibly unlikely that should not be taken for granted. I don’t see it as necessarily a god-given blessing, though; science can explain in outline and in a great many of the details how this all came to be, and we have no evidence of (or need for) a divine hand. It would be less incredible to me if I believed that a god put it all together, with man at the apex or the center. What awes me is the thought of the billions of years and countless tiny changes that have had to take place for us to be here. Think of the things that have to be happening in your brain right now for you to read and understand this; maybe I never met you and you know nothing of me but the words on the screen. And yet you can to some degree understand my thoughts, bridge time and space by knowing what is going on in my mind. How tremendous a story it is that results in our ability to do this.

Some other beliefs that matter to me do not rely on the Rare Earth hypothesis being true, but they do fit well within its framework: the belief that the living systems of this planet deserve our respect and protection; the belief that each person, each consciousness, is also worthy of respect; the belief that we should try to appreciate and experience thoroughly all that we can while we’re here, because life is brief and the forces of chaos that act against it can be strong. Even if we find that complex life is as common in the universe as chiggers in July, I would still hold the first two beliefs, but I would need to rethink part of the framework in which they rest. The belief in the fragility and briefness of life might need some more serious consideration, if we discover that we live in a cosmos that is abundant with life.

This kind of rethinking would be tougher, of course, in cases where a person’s beliefs about the existence of an immortal soul or the origins of humankind conflict with what science tells us, and this illuminates an area of tension between religion and science. With any scientific knowledge, the conclusions we draw reflect much more than just what the facts tell us. Our urge for discovering meaning leads us to begin to add layers of values and beliefs onto any new scientific truth. If possible, we’ll re-work our existing beliefs so that they fit with the new truth, but sometimes we can’t reconcile the two, we have to choose one or the other. This is one source for conflict between science and religion. The two are intertwined in that way.

But the layers of meaning that different people build on top of science are often astonishingly contradictory. The science and the beliefs are separate: Very different structures can be built on the same foundation of facts, whereas the scientific results themselves are our best attempt at an objective understanding of the physical world. Thus I agree with the Dalai Lama that if a scientific truth disproves one of our beliefs, we should choose the scientific truth and discard the belief.

The variety of ways we can draw meaning from our scientific knowledge also demonstrates that the stories we build on a scientific foundation can have at least as much meaning, inspiration, and beauty as any based on religious doctrine. Charles Darwin spoke of the grandeur in an evolutionary view of life that saw “that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.”

Mysticism and music

The annual Lotus World Music Festival here in Bloomington usually inspires a number of Thinking Meat ideas. The way people gather to share each other’s music is one of the very best things about humankind, in my opinion, and the joy, beauty, and meaning that are created and shared each year always move me. It was at Lotus several years ago, long before I thought of this web site, that I first thought that maybe music was one of the ways that people deal with the difficulties of being thinking meat. This year’s festival was held this past weekend, with a great line-up and all kinds of musical pleasure to be had.

Probably the act that made the biggest impression on me was a group called Sidi Goma. the Black Sufis of Gujarat. All I knew going into it was that there would be Sufi trance music and dancing. When the group was introduced, I was enchanted to learn that in their chanting and dance, they are honoring the spirit of their “saint of joy”, Bava Gor. I was raised Catholic so I know of quite a lot of saints, but most of them are patron saints that you call on in some extremity or another (lost objects, lost causes, toothache). St. Francis Assisi, of course, is patron of the animals, and there is a patron saint of music, St. Cecelia. My mother was named for her. But I don’t remember ever hearing about a saint of joy. (Garrison Keillor pegged a certain Catholic mindset quite well when he named the Catholic church in Lake Wobegon “Our Lady of Perpetual Responsibility”.) So the idea that these people were going to dance in order to get closer to a saint of joy, and to share that joy with us, was delightful.

This was among the most overtly psychoactive music I’ve ever encountered. It began with a call to prayer and then some slow drumming, and as the music went on the drumming and chanting grew and developed until it filled the stage with sound and rhythm and, indeed, joy. It was utterly absorbing. The dancing started out small, one performer at a time going to center stage and doing some stylized moves around the stage while his comrades kept playing. But toward the end, several of the group came out in face paint and exotic costumes (skirts made of peacock feathers!) and did a much more complicated dance, complete with the smashing of coconuts on a couple of dancers’ heads.

I don’t know that I interpret the sacred in the same way as the Sufis do; I tend to see it as something inherent in ourselves (likely not supernatural) that we can foster or stifle. However you define it, though, this performance definitely involved tapping into something that goes beyond the everyday and transcends the life of any single person. I found this use of music and dance fascinating, and I enjoyed where it took me.

I wanted to learn more about who these people were so I dug around on Google a bit. I learned that the Sidis of India came from East Africa to India around eight centuries ago, some of them as slaves. Sufism is the mystical tradition of Islam, and music and dance are one of the ways that Sufis use to attain a state of contact with the divine. One of the time-honored roles for the African Sufis in India has been that of itinerant performer of sacred dance and music, and it’s that tradition that Sidi Goma comes from. They have been in India so long that they speak Hindi and Gujarati, but some of what they sing is in Swahili. I wasn’t able to find out much about the meaning of some of the gestures in the dances; they seemed to be telling a story but I’m not sure what it was. I also couldn’t find much about Bava Gor, the saint of joy. Maybe the library has something.

This BBC article describes their visit to Zanzibar in 2003, which I saw described elsewhere, in an article that now appears to be defunct, as “a homecoming to a place they had never been to.”

Penguins and family values

When I reviewed recent nature documentaries, including March of the Penguins, I worried about anthropomorphizing the penguins, interpreting their behavior in human terms and not paying enough heed to the fact that technically, they’re not people. Evidently some conservatives are unconcerned about that; they think that the difficult Darwinian struggle of the birds to reproduce provides a good lesson in Christian family values. Frankly this baffles me. For starters, if I’m remembering this correctly, the penguins choose a different mate each breeding season. Serial monogamy is certainly a human practice as well but it’s not one that I thought had much to do with conservative Christian ideals. I also can’t see anything in the movie to support the idea of an intelligent designer. It’s striking that these creatures can thrive in a harsh environment, but there’s nothing in the movie to dispute the fact that they adapted to it through natural selection (and in fact I believe the narrator mentions how they’ve lived there for millions of years, which goes against the literal Biblical account of creation). Wouldn’t an intelligent designer, especially one who finds life sacred, have found a way around some of the incredible difficulties that winnow out penguins at every step of their struggle to reproduce?

Here’s an article from the New York Times (free registration required) about the conservative reaction to the movie.

Vonnegut, pessimistic but inspiring

Here’s an interesting article from the Los Angeles Times about Kurt Vonnegut’s latest book (A Man Without a Country) and about his work in general. Vonnegut’s current take on the human race is pretty bleak (not that he was ever all that optimistic). I disagree with his statement that only a nutcase would want to be a human being (or else I have to confess that I’m a nutcase), but I like the fact that he’s still doing his best to find something beautiful and useful to do with his talents. There are a number of ideas in here that inspired me, including what he has to say about the comfort to be found in words on the page, and the fact that great Americans are still speaking to us in their books, if we only read their words. I really liked the closing quote too. I don’t think Vonnegut has really given up all hope of finding the good in humankind, and I’d like to read his new book.

http://articles.latimes.com/2005/sep/10/entertainment/et-vonnegut10

Explaining natural disasters

When something goes wrong, we want to understand why. It’s not just that we want to understand the physical forces involved so that we can know what to do (or not do) next time. If we believe in a god, we also want to know how bad things can happen to decent people in a world run by a just deity. (Even if we don’t believe in a god, we need to find some way to live with peace of mind in a dangerous world.) In a Calvin & Hobbes cartoon, Calvin is sadly pondering the death of an injured raccoon; why, he wonders do things have to die, particularly a harmless little raccoon? “It’s either mean or it’s arbitrary,” he concludes, “And either way I’ve got the heebie-jeebies.” That sums up pretty well the problems that people face when trying to explain how something terrible could happen, like the extensive destruction resulting from hurricane Katrina, in any kind of a just or fair world. The word “theodicy” describes the attempt to make some kind of sense out of situations like these.

This article from the New York Times gives a brief summary of theodicies past and describes a shift in our thinking from coming up with religious reasons to coming up with political/ideological reasons. It’s an interesting perspective on a lot of the discussion that’s going on now. I wonder if the shift is linked to the fact that we now have more knowledge about and control over our physical environment, and our expectations for somehow being kept safe are relatively high, especially in the US. Numerous people chose to ignore numerous clues that New Orleans was not safely situated. Although the hurricane was the kind of random event that gave Calvin the heebie-jeebies, you’ve got to wonder about the complex failure of human society to either prepare for or mitigate the effects of a major hurricane hitting New Orleans, given that we knew what was likely to happen if one ever did.

http://www.nytimes.com/2005/09/08/books/08dest.html?pagewanted=all
(Free registration required)

Ravens can deceive

David Barash recently wrote in the Chronicle of Higher Education that humans are not alone in the capacity for violence against their own kind. He was arguing against the kind of thinking that claims that humans are uniquely depraved and the rest of nature is much kinder. The other side of the coin is the people who think that we humans are uniquely mentally sophisticated compared to the rest of the animals. It’s slowly becoming plain that other animals can learn new things and teach them to others, and also can understand to some degree what’s in another’s mind. Here’s an article from the New York Times that describes recent work with ravens that shows that they understand what other ravens are thinking well enough to practice deception. There’s some other raven research results here and also a discussion of how humans are not so mentally special after all, both in comparison to other animals and also in comparison to artificially “intelligent” devices. I’m more easily convinced on the former than the latter, but it’s all interesting reading. Site requires free registration.

http://www.nytimes.com/2005/09/04/magazine/04IDEA.html?pagewanted=all

Penguins, parrots, bears, and humans

Not to hurt or humble the animals is our first duty to them, but to stop there is not enough. We have a higher mission, to be of service to them whenever they require it. If you have men who will exclude any of God’s creatures from the shelter of compassion and pity, you will have men who will deal likewise with their fellow men.—St. Francis of Assisi

How can we be of service to animals or include them in the shelter of our compassion? Three recent documentaries address this question, obliquely or directly. March of the Penguins suggests that we can learn about the lives of wild creatures and understand that in some ways, as the narrator of the film says, we are not so different from them after all. The Wild Parrots of Telegraph Hill shows how one human found a way to relate to wild birds and balance respect for their wild natures with the ability to provide help when they needed it. Grizzly Man is a disturbing look at what happens when a human identifies so strongly with wild bears and wants so urgently to help them that he gives his life for the chance to be near them.

The penguins

When I went to see March of the Penguins, I didn’t know much about penguins. I had a mental image of a creature so absurd it’s endearing, a waddling bird/fish in a tuxedo. I found that they have as dramatic a story as any living thing, and display great endurance in carrying out the task of not only surviving but bringing new penguins into the world.

The movie, narrated by Morgan Freeman and based on a story by Luc Jacquet, covers a year in the life of a group of Emperor penguins. We are told at the beginning of the movie that their home, Antarctica, is the darkest, coldest, windiest, driest place on earth. During the relatively warm months of summer, the penguins swim in the cold water and eat fish. With the approach of winter in March, they begin a long trek to their breeding ground, many miles from shore (at least during the colder months when the ice extends out over the water).

At the breeding ground, they pair off in couples; penguins, like some humans, are serially monogamous, pairing off anew each breeding season. After the mother lays an egg, it must be protected from the harsh environment if it is to hatch. Penguins shelter the eggs with their bodies, cradling the eggs on top of their feet and shrouding them with the lower parts of their bodies. One of the severe tests of a couple’s parenting skills comes long before the egg hatches: the female must transfer the egg to the male, and quickly, before it has a chance to lose too much heat. When that is accomplished, the female sets off for the ocean again to eat and bring back food for the baby that will hatch while she is gone. The males hunker down to endure most of the long cold winter alone, keeping the eggs warm.

The film makes it plain that penguins are winnowed out of the race to reproduce at every stage. There are more females than males, so not everyone finds a mate. Not every pair manages to successfully transfer the egg from female to male. Not every father makes it through the winter. Not every mother evades the hungry seals and comes back with food. Not every hatchling survives the cold and the predators. Every ungainly velvety gray chick waddling around on the ice looks like a lucky miracle of survival.

The narrative talks of the mother, father, and baby as a family, but they don’t really spend much time together. The fathers head for the water as soon as the mothers get back, because they desperately need to eat. Then the parents take turns going to the water and staying with the babies. At the end of the first year, the babies are old enough to be on their own. At first I thought that calling the three penguins a family was a somewhat strained analogy, because the penguins are so different from human families. But if you think of families as groups of individuals whose purpose is to rear a new generation of their kind, then I guess these penguin groupings qualify. And there’s certainly no reason that the way they do it should be like the way we do it. The undertaking requires what looks to me like trust, patience, perseverance, and affection.

It’s hard telling what it looks like to the penguins, though. I don’t know the degree to which they’re responding to instinct or hormones in caring for their young (but then how much of love between people is mediated by hormones?). I’m not sure how much sense we can make of the idea that the penguins are brave or loving, and I hesitate to assume that that they are like us when I just don’t know. It was surprising, though, how human some of their behavior seemed. There was a moment when the hungry males, nurturing their offspring while besieged by violent winter storms, first hear the approach of the returning females. Every head lifts and turns at the same instant; I’ve seen similar moments in human crowds. And the noises they made were surprisingly expressive. Early in the journey to the breeding ground, one penguin slid down a slope and into the back of another penguin, who turned to deliver what sounded for all the world like an irritated scolding. When the camera watched one couple fumble their egg transfer, the penguins made low mournful noises as the doomed egg froze.

This movie left me much more aware of some of the other rhythms of life that are going on all over the planet. It fosters a sense of kinship with other lives even though they’re very different from anything we could possibly experience for ourselves. Maybe you’ve seen the software that shows you on a map which parts of the earth are sunlit; I’ve been watching how the distribution of sunlight is changing as we move toward northern-hemisphere fall. I don’t like to see the light retreating toward the south, but as I watch the white bulk of Antarctica touched by the returning sun, I think of those penguins and I’m glad their long vigil is nearly over.

The parrots

I knew a little bit more about parrots going into The Wild Parrots of Telegraph Hill than I did about penguins. My brother Vinny has several birds and he also provides a foster home for birds who have been neglected or mistreated. In fact, Vinny sent me a copy of The Wild Parrots of Telegraph Hill: A Love Story . . . with Wings for my birthday this year. The book and the documentary describe Bittner’s discovery of a wild parrot population in San Francisco, his efforts to make friends with some of the birds, and his relationship with the flock.

There was a lot I didn’t know, though. For example, San Francisco is not the only major city that has a group of wild parrots. No one’s sure exactly where San Francisco’s parrots come from, although there are several stories. Some cities have populations near the airport; perhaps the birds escaped from a shipment destined for a pet store. Parrots are smart and resourceful enough to find food and make their way in a strange environment. (As a matter of fact, I blogged a story awhile back about how brain size is inversely correlated with a tendency to migrate: the bigger the average brain size, the less likely a species of bird is to be migratory. This might be related to the ability to find food without having to travel somewhere else.)

Many birds migrate to warmer places in the winter not because they can’t deal with the cold, but because their food sources are not available during the winter. So they evidently do all right in Chicago because they can find things to eat. In fact, some cities have parks that use plants that are native to where the birds are from, so they can eat what they’re used to. I was intrigued by the idea of both the birds and their food being imported to the city for different reasons and then meeting up again, so to speak, on strange new turf.

For all the legitimate concern about invasive species of plants and animals, I was glad to hear that these transplanted birds are by and large doing all right, especially after I learned about the sometimes brutal and destructive practices that people have used to catch birds to sell.

Bittner was a lonely, somewhat rootless “dharma bum” of middling years when he discovered the wild birds in his San Francisco neighborhood. He was fascinated and tried to learn more and to get to know them. He succeeded so well that they would flock to his balcony for feedings, climbing all over him, sitting on his head or his arms. He got to know individual birds and gave them names based on their personalities or physical characteristics. In the movie they were sometimes like a large rowdy group of kindergarteners, mostly silly, one or two of them more reserved or shy or dignified or aggressive. A number of them were clowns, doing goofy stunts evidently for the sheer joy of it. I knew from my brother that birds have distinctive personalities, and even from my relatively short exposure to the birds in the film I could see that they were not all the same.

The subtitle for the Wild Parrots book is “a love story with wings”. Bittner found companionship with the birds, forming individual friendships. He also learned a great deal as he became more and more involved with the birds, from the history of his own neighborhood to the natural history of the birds. Eventually his involvement with the birds led him to the human companionship he sought. The birds led him toward, not away from, other people.

His relationships with the birds were fascinating and often charming. He wrote in the book that while parrots “aren’t exactly like human beings”, he believed “that each bird is no less an individual personality than I am.” They were social creatures, and it’s obvious that many of them felt trust and affection for him. There is a delightful moment in the film where Bittner is playing the guitar and singing the blues and a bird called Mingus is listening interestedly and bobbing with the music. It was a great example of two species finding some common ground. As he formed emotional bonds with some of the birds, though, Bittner worried sometimes about whether he was anthropomorphizing them and assuming they were more similar to humans than they really are. He also wrestled with questions of how to help a sick or injured bird, recognizing that it’s important both to preserve their lives and to preserve their spirits as wild creatures.

As with any relationship with other animals, not all the stories are happy. Several of the birds died. Toward the end of the movie Bittner described the death of a young bird called Tupelo after an illness, in particular the emotional bond he felt with her and the feelings that he felt she was expressing at the end: sadness, a wistful desire to be comforted, resignation. I was not the only one crying by the end of that part of the film.

In a chapter of the book called “Consciousness Explained”, Bittner describes what he learned from the birds. It’s a wonderful, thoughtful, moving meditation on his beliefs about the nature of consciousness and life, and our relationship to other creatures. He articulates a Buddhist philosophy that accepts scientific explanations for the origins and workings of life, and seeks beyond science for spiritual meaning. The chapter concludes with Bittner’s realization that humans and parrot alike are finite pieces of a larger consciousness.

A story that came late in the movie illuminated more or less the same truth for me. An older bird, Connor, was killed by a red-tailed hawk. This kind of thing happens in nature all the time, of course. Birds of prey have to eat too. (Bittner wrote in the book that he wasn’t mad at the hawk.) What struck me was that although you can understand the food web and the way ecosystems work all you like, it still hurts that that bird died that way. He had a name; he was an individual. You miss that one, that particular bird. It’s exactly the same realization that led me to the idea of thinking meat in the first place, years ago. We are prey to large predators and small bacteria and the imperfections and vulnerabilities of our own bodies, just like other living things. I can understand the way death is woven inextricably into the fabric of life, and try to accept that fact. But because we are conscious beings who are aware of each other as individuals, we can’t just fold our hands philosophically and talk about the web of life or survival of the fittest when someone close to us dies. What I didn’t realize is that all this doesn’t apply only to people. You can have that same complicated set of feelings, recognizing the necessity of death but protesting each individual loss, for other living creatures, like these birds.

The bears

I worried about anthropomorphism when I was writing about the penguins, and Mark Bittner begins the chapter “Consciousness Explained” with his concerns about anthropomorphizing the birds. Timothy Treadwell, the subject of Werner Herzog’s aptly titled Grizzly Man, identified so strongly with grizzly bears that I don’t know if the question of whether he was anthropomorphizing them ever occurred to him. Treadwell spent 13 summers living with and filming the grizzly bears of the Alaskan peninsula until he and a companion were eaten by a grizzly bear in fall 2003. In Grizzly Man, Herzog talks to people who knew Treadwell and also includes plenty of Treadwell’s own video footage of himself and the bears. The result is a disturbing, haunting film that raises questions well beyond that of our relationship to other animals.

Treadwell loved the bears. He repeated this fact over and over, to the camera and to the bears themselves. He also loved the foxes he met in Alaska. He gave the bears names: Mr. Chocolate, Sgt. Brown, Aunt Melissa, Mickey, Saturn, Grinch, Demon, Hatchet. He thought that he had a mission to protect the bears, although it was not obvious to me how he was protecting them, or from what. Most of the land Treadwell covered was federal land where the bears were already protected; it’s not clear how much poaching was going on or how Treadwell thought he would fight it, or even whether his presence truly did the bears any good.

Herzog interviewed a native Alaskan, who said that the natives understood that the bears were different from people. Humans and bears each have a place in nature, and humans respect the bears by not crossing over into their turf. Treadwell, he said, breached a boundary that the natives had lived with for 7,000 years. Habituating bears to humans is generally not doing them a favor; it’s better for bears to learn to avoid humans. (The bear that ate Treadwell and his companion was shot by park rangers.)

But Treadwell was plainly deeply dedicated to the task of understanding the bears and teaching the rest of the world about them. He survived for much longer among them than most other people could have. (When he died, he was in Alaska later in the year than he normally was, and he was attacked by a bear he did not know well, an older male who apparently was desperate to find food before it was time to hibernate.) When you listen to Treadwell talk about being a kind warrior and being stronger than the bear, or rhapsodizing over fresh bear droppings, it’s easy to think that he was just plain crazy (and in fact I agree with a friend’s opinion that the movie traces his descent into madness). But he did understand a great deal about the bears, and he managed to survive some very close encounters. It was amazing to see the bears coming up very close to the camera and hear Treadwell telling them to go away, and to see that they did indeed go away.

Treadwell spoke of the bears and the foxes as a parent might speak to or about a child. When a hunting party throws rocks at one of the bears, Treadwell, skulking in the brush, says indignantly but sotto voce to the camera that the man is throwing rocks at “my Quincy”. When a fox starts playing with his hat, he sounds like a parent with a toddler: “What are you doing to that hat? Where’s that hat going?” But when the fox runs off with the hat, Treadwell loses his temper and gives chase, swearing and berating the fox.

I don’t know how he expected the fox to know how he wanted him to behave. For someone so in love with nature, he seemed remarkably resistant to some of nature’s most basic facts. He wanted to see harmony and love, and he wanted the creatures he loved to be immune from the sometimes cruel workings of nature. When a fox died or a baby cub was killed by an adult male (which bears do sometimes; it makes the mother stop lactating and go into estrus again, so that the male can impregnate her), Treadwell alternately mourned and cursed. During a drought when the bears were hungry, he stormed heaven with outraged entreaties for rain for his animals. Herzog saw nature as chaos and murder; Treadwell seemed to expect the freedom and joy of the wilderness to be the whole story, and to be almost taken by surprise by the inevitable harshness and unpredictability of nature.

Herzog also said that while he saw no kinship in the faces of any of the bears that Treadwell filmed, Treadwell himself thought of them as friends. He had been an alcoholic before retreating from the human world into the world of the bears, and he thanked the bears for giving him a life. He said he had an agreement with them: he’d protect them, and they’d help him be a better person, which is really strange when you stop to think about it, because being with the bears seemed to make him almost not want to be a person at all. When Bittner said that he and the parrots all shared a part of a larger consciousness, he was still aware that they were not the same as humans and he was respectful of the differences. I think if humans and bears share any consciousness, it’s at a much more elemental level than anything that humans share with birds. The bears seemed to understand, eventually, when Treadwell would tell them to go away, but they seemed totally indifferent to his declarations of love and loyalty (although the foxes would sometimes sit quietly and let him pet them). After he watched two males in a horrifying fight over a female, he talked to the winner, sounding almost like a reporter with a microphone talking to a victorious athlete. The bear seemed to be asleep, not even turning his head.

Technically, what am I?

My brother once told me a story about a bird called Koko that he looked after one weekend for a friend of his. Koko was talking about my brother like he was one of the birds, and Vinny had to explain that technically, he wasn’t really a bird. Koko evidently liked the sound of that, because when she went home at the end of the weekend she startled Vinny’s friend by announcing, “Technically, I am not a bird.”

Technically, I am not a bear, but I tend to talk about myself and those closest to me as bears. Bears are in some sense my totem animal. Bears are often playful, smart, and curious, and I admire those qualities. I’m surrounded by various representations of bears: many photos, a couple of bear pendants that I wear sometimes, a small figure of a bear with a fish in his mouth, even a twonie, the Canadian two-dollar coin, which has polar bear on one side of it. But I know I’m really not a bear. I don’t fish in a stream with my paws for salmon and eat it raw. I don’t even fish with a line and eat it cooked. I haven’t been very close to many real live bears. Any kinship I feel with them is based on a much more distant and abstract understanding of them than Treadwell had from living intimately among them as he did for so long.

So my understanding of bears is heavily filtered through my humanity, and not true to any direct experience of the animals themselves. I feel almost sheepish about it, after seeing someone who really truly did identify with bears in a way I never could. But for all his direct experience of the bears, Treadwell’s concept of the ursine was filtered through his humanity too.

I think Herzog hit the nail on the head when he said that Treadwell’s film of the bears was perhaps not so much a look into wild nature as a look into ourselves. Several of the people interviewed in the movie said that Treadwell wanted to be a bear, to become so connected that he merged with them. Herzog described him as wanting to leave the confines of his humanity. Treadwell did not like or enjoy or thrive in the world of people and of civilization. Judging from what I saw of him in his own videos, he was emotionally very volatile (he quit taking antidepressants because he felt the middle way was not for him; he needed the highs and lows) and he sought out danger and risk. He seemed to harbor a very Romantic notion of nature and of wild animals, going beyond even Rousseau, who at least thought that humans in their natural state were full of grace (the noble savage). It looked to me like Treadwell by and large had to seek outside the human race entirely to find a group of beings with whom he felt much affinity.

Treadwell’s tragedy seems to be that he couldn’t find a way to fit into the human world, and the world that he tried to enter instead wound up killing him. Before he left for his last summer with the bears, he told a friend that if he didn’t come back, it was the way he wanted to go. Although I don’t deny his right to choose how to live his life, it’s hard for me to say how much that really mitigates the tragedy for the people he left behind. Certainly I value the human world far too much to ever turn my back on it the way he did. And while for most of us it’s evidently not as hard as it was for him, we all do have to fit ourselves somehow into a world of flawed human beings. One of the most rewarding things about being here is the effort to continue to grow, to learn how to overcome your weaknesses and stretch yourself to incorporate some uncomfortable but necessary behaviors into who we are. But you can only stretch so far before you start to feel like you are betraying your true self, and for Treadwell that limit was much closer than it was for most of us.

I’m of two minds about this. On the one hand, he was passionately true to himself, and I have to respect that genuineness and the courage it took him to follow his love for the bears wherever it led. On the other hand, not everything about ourselves is good. The process of deciding what to embrace about your own physical or emotional nature, and what to acknowledge but try to curb, is a difficult one. Negotiating a realistic balance between the demands of the outer world and the needs of your true self requires a firm grasp on reality, and an acceptance of the truths of nature and human nature as they are, not as you would like them to be.

When I was talking about the movie with a friend, he said that Treadwell obviously felt a deep love for the bears, no matter what kind of illusions he was harboring. But I wonder, how truly can you love nature or any part of it if you don’t understand and respect the reality of what you love?

Coda

All three movies offered some visual treats, and all were worth seeing. Parrots was far and away my favorite, because it resonated most strongly with my own beliefs. Penguins and Parrots both are much gentler films than Grizzly Man, which is darker overall and contains much starker contrasts (between Herzog’s and Treadwell’s views). I think Parrots provides the most balanced view of our relationship to other animals, seeing both the similarities and the differences without getting too carried away in either direction. If you’re going to see Grizzly Man, you might want to bring along a friend or two. The movie is sure to spark some vigrous discussion about questions of nature, wilderness, sanity, and identity.