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Mostrando postagens com marcador Stephen Jay Gould. Mostrar todas as postagens
Mostrando postagens com marcador Stephen Jay Gould. Mostrar todas as postagens

quinta-feira, 21 de maio de 2020

O último artigo de Stephen Jay Gould na Natural History (2000-2001)


Natural History magazine, December 2000–January 2001

I Have Landed

In the final essay of this twenty-seven-year series,
the author reflects on continuity—from family history
to the branching lineage of terrestrial life. 


As a young child, thinking as big as big can be and getting absolutely nowhere for the effort, I would often lie awake at night, pondering the mysteries of infinity and eternity and feeling pure awe (in an inchoate, but intense, boyish way) at my utter inability to comprehend. How could time begin? For even if a God created matter at a definite moment, then who made God? An eternity of spirit seemed just as incomprehensible as a temporal sequence of matter with no beginning. And how could space end? For even if a group of intrepid astronauts encountered a brick wall at the end of the universe, what lay beyond the wall? An infinity of wall seemed just as inconceivable as a never-ending expanse of stars and galaxies.
I will not defend these naive formulations today, but I doubt that I have come one iota closer to a personal solution since these boyhood ruminations so long ago. In my philosophical moments—and not only as an excuse for personal failure, for I see no sign that others have succeeded—I rather suspect that the evolved powers of the human mind may not include the wherewithal for posing such questions in answerable ways (not that we ever would, should, or could halt our inquiries into these ultimates).
Irene and Joseph Rosenberg

Irene and Joseph Rosenberg (Grammy and Papa Joe), the author’s maternal grandparents, circa 1950.

All photographs and illustrations courtesy of Stephen Jay Gould.
However, I confess that in my mature years, I have embraced the Dorothean dictum: yea, though I might roam through the pleasures of eternity and the palaces of infinity (not to mention the valley of the shadow of death), when a body craves contact with the brass tacks of a potentially comprehensible reality, I guess there’s no place like home. And within the smaller, but still tolerably ample, compass of our planetary real estate, I would nominate as most worthy of pure awe—a metaphorical miracle, if you will—an aspect of life that most people have never considered but that strikes me as equal in majesty to our most spiritual projections of infinity and eternity, while falling entirely within the domain of our conceptual understanding and empirical grasp: the continuity of etz chayim, the tree of earthly life, for at least 3.5 billion years, without a single microsecond of disruption. 
Consider the improbability of such continuity in the conventional terms of ordinary probability: take any phenomenon that begins with a positive value at its inception 3.5 billion years ago, and let the process regulating its existence proceed through time. A line marked zero runs along below the current value. The probability of the phenomenon’s descent to zero may be almost incalculably low, but throw the dice of the relevant process billions of times and the phenomenon just has to hit the zero line eventually.
For most processes, the prospect of such an improbable crossing bodes no permanent ill, because an unlikely crash (a year, for example, when a healthy Mark McGwire hits no home runs at all) will quickly be reversed, and ordinary residence well above the zero line reestablished. But life represents a different kind of ultimately fragile system, utterly dependent upon unbroken continuity. For life, the zero line designates a permanent end, not a temporary embarrassment. If life had ever touched that line for one fleeting moment at any time during 3.5 billion years of sustained history, neither we nor a million species of beetles would grace this planet today. A single handshake with voracious zero dooms all that might have been, forever after.
When we consider the magnitude and complexity of the circumstances required to sustain this continuity for so long—and without exception or forgiveness in each of so many components—well, I may be a rationalist at heart, but if anything in the natural world merits designation as “awesome,” I nominate the continuity of the tree of life for 3.5 billion years. Earth experienced severe ice ages but never froze completely, not for a single day. Life fluctuated through episodes of global extinction but never crossed the zero line, not for one millisecond. DNA has been working all this time, 
I would nominate as most worthy of pure awe the continuity of the tree of earthly life for 3.5 billion years, without a single microsecond of disruption.
without an hour of vacation or even a moment of pause to remember the extinct brethren of a billion dead branches shed from an ever growing tree of life. 

When Protagoras, speaking inclusively despite the standard translation, defined “man” as “the measure of all things,” he captured the ambivalence of our feelings and intellect in his implied contrast of diametrically opposite interpretations: the expansion of humanism versus the parochialism of limitation. Eternity and infinity lie too far from the unavoidable standard of our own bodies to secure our comprehension, but life’s continuity stands right at the outer border of ultimate fascination: just close enough for intelligibility by the measure of our bodily size and earthly time but sufficiently far away to inspire maximal awe.
Moreover, we can bring this largest knowable scale further into the circle of our comprehension by comparing the macrocosm of life’s tree to the microcosm of our family’s genealogy. Our affinity for evolution must originate from the same internal chords of emotion and fascination that drive so many people to trace their bloodlines with such diligence and detail. I do not pretend to know why the documentation of unbroken heredity through generations of forebears brings us so swiftly to tears and to such a secure sense of rightness, definition, membership, and meaning. I simply accept the primal emotional power we feel when we manage to embed ourselves into something so much larger.
Grammy and Papa Joe circa 1916

Grammy and Papa Joe shortly after their wedding, circa 1916.
And so evolution has anchored this series of essays through 300 uninterrupted issues of Natural History, from January 1974 to this first offering in some people’s version of the new millennium, January 2001. (A missing month might not have entailed full extinction, but I did appreciate the practical goad and pure conceit of thinking that I needed to mirror the utterly unforgiving topology of evolutionary continuity!) I called my series “This View of Life” to honor the finale of Darwin’s Origin of Species, for the closing sentence of this founding document begins with a justifiably poetic description of evolution: “There is grandeur in this view of life.” As one major reason for evolution’s enduring popularity among scientific subjects, our minds combine the subject’s sheer intellectual fascination with an even stronger emotional affinity rooted in a legitimate comparison between the sense of belonging gained from contemplating family genealogies and the feeling of understanding achieved by locating our tiny little twig on the great tree of life. Evolution, in this sense, is “roots” writ large.
If continuity so tugs at our heartstrings and so defines our sense of being within the expanding totalities of a personal family, the full human species, and the entire tree of life—and if unbroken continuity defines both the awe of “this view of life” and the conceit of a little literary microcosm also called “This View of Life”—then how else can I end except with a paean to continuity on both scales? Of my decision to hang up the spikes of this particular monthly enterprise, I will only say that when I noted the fortuitous conjunction of my 300th entry with the auspicious date of January 2001, I felt that arbitrary calendrics and numerology must be trying to tell me something. I know that I could persevere until the angel of death makes his most unwelcome, albeit inevitable, intrusion. At least my list of potential topics has never become shorter (my personal criterion, throughout all these years, for a stopping signal that never sounded). But I never witnessed anything sadder than Willie Mays and Mickey Mantle playing far beyond their prime, and I don’t want to risk the possibility of even embarking upon a downhill slope, much less facing, however unawares, an actual entrance into professional dotage. Few old troupers have the gumption to follow what I like to call the “DiMaggio-Jordan principle”: not just to “quit while you’re still ahead” but the more upbeat #147;quit while they still want you.” I only hope that I have the gumption and that, dear readers, some of you might still want me. 
I therefore offer two microcosmal stories of stubborn persistence for my swan song—two analogues or metaphors for this grandest evolutionary theme of absolutely unbroken continuity, the intellectual and emotional center of this view of life. My stories descend in range and importance from a tale about a leader in the founding generation of Darwinism to a story about my grandfather, a Hungarian immigrant who rose from poverty to solvency as a garment worker on the streets of New York City.
Our military services now use the blandishments of commercial jingles to secure their “few good men” (and women) or to entice an unfulfilled soul to “be all that you can be in the army” (emphasize the second syllable of the service, attach a catchy tune, and this enticement even rhymes). In a slight variation, another branch emphasizes external breadth over internal growth: “Join the navy and see the world.”
In days of yore, when reality trumped advertisement, this last slogan often did propel young men to growth and excitement. In particular, budding naturalists without means could 
Family genealogy is our tiny twig on the great tree of life. Evolution is “roots.”
attach themselves to scientific naval surveys by signing on as surgeons or just as general gofers and bottle washers. Darwin himself had fledged on the Beagle, largely in South America, between 1831 and 1836, though he sailed (at least initially) as the captain’s gentleman companion rather than as the ship’s official naturalist. Thomas Henry Huxley, a man of similar passions but lesser means, decided to emulate his mentor (Darwin was born in 1809, Huxley in 1825) by signing up as assistant surgeon aboard HMS Rattlesnake for a similar circumnavigation, centered mostly on Australian waters and lasting from 1846 to 1850.

Huxley filled these scientific Wanderjahre with the usual minutiae of technical studies on jellyfishes and grand adventures with the aboriginal peoples of Australia and several Pacific islands. But he also trumped Darwin in one aspect of discovery, with extremely happy and lifelong consequences: he met his future wife in Australia, a brewer’s daughter named Henrietta Anne Heathorn, or Nettie to the young Hal. They met at a dance. He loved her silky hair, and she reveled in his dark eyes that “had an extraordinary way of flashing when they seemed to be burning—his manner was most fascinating,” as she stated in her diary. 
Huxley wrote to his sister in February 1849: “I never met with so sweet a temper, so self-sacrificing and affectionate a disposition.” As Nettie’s only dubious trait, Hal mentioned her potential naïveté in leaving “her happiness in the hands of a man like myself, struggling upwards and certain of nothing.” Nettie waited five years after Hal left in 1850. Then she sailed to London, wed her dashing surgeon and vigorously budding scientist, and enjoyed, by Victorian standards, a happy and successful marriage with an unusually decent and extraordinarily talented man. (Six of their eight children lived into reasonably prosperous maturity, a rarity in these times, even among the élite.) Hal and Nettie, looking back in their old age (Hal died in 1895, Nettie in 1914), might well have epitomized their life together in the words of a later song: “We had a lot of kids, a lot of trouble and pain, but Oh, Lord, we’d do it again.”
Inscriptions in a volume of poetry

Henrietta Heathorn’s inscriptions in a volume of poetry given first to her fiancée, Thomas Huxley, and sixty years later to her grandson
The young and intellectually restless Huxley, having mastered German, decided to learn Italian during his long hours of boredom at sea. (He read Dante’s Inferno in the original terza rima during a year’s jaunt centered about New Guinea.) Thus, as Huxley prepared to part from his fiancée in April 1849 (he would return for a spell in 1850, before the long five-year drought that preceded Nettie’s antipodal journey to their wedding), Nettie decided to give him a parting gift of remembrance and utility: a five-volume edition, in the original Italian, of course, of Gerusalemme liberata, by the great Renaissance poet Torquato Tasso. (This epic, largely describing the conquest of Jerusalem by the First Crusade in 1099, might not be deemed politically correct today, but the power of verse and narrative remains undiminished.)
Nettie presented her gift to Hal as a joint offering from herself, her half sister Oriana, and Oriana’s husband, her brother-in-law William Fanning. She inscribed the first volume in a young woman’s hand: “T. H. Huxley. A birthday and parting gift in remembrance of three dear friends. May 4th 1849.” For some reason that I have never fathomed but will not question, this set of books sold (to lucky me) for a pittance at a recent auction. (Tasso isn’t big these days, and folks may have missed the catalog entry describing the provenance and context.)
So Nettie Heathorn came to England, married her Hal, raised a large family, and lived out her long and fulfilling life well into the twentieth century. As she had been blessed with accomplished children, she also enjoyed, in later life, the promise of two even more brilliant grandchildren: the writer Aldous Huxley and the biologist Julian Huxley. And now we come to the point of this tale. In 1911, more than sixty years after she had presented the five volumes of Tasso to Hal, Nettie Heathorn, then Henrietta Anne Huxley, and now Granmoo to her grandson Julian, removed the books from such long residence on her shelf and passed them on to the young man who would later carry the family’s intellectual torch with such distinction. In the clear but shaky hand of an old woman, she wrote below her original inscription the missing who and where of the original gift: “Holmwood, Sydney, N.S. Wales. Nettie Heathorn, Oriana Fanning, William Fanning.”
Above her original words, penned in the flower of youth, she then wrote, in a simple statement that needs no explication and that surely lies too deep for tears in its eloquent invocation of life’s persistence: “Julian Sorel Huxley, from his grandmother Henrietta Anne Huxley née Heathorn ‘Granmoo.’” She then emphasized the sacred theme of continuity by closing her rededication with the same words she had written to Hal so many years before: “‘In remembrance.’ 28th July 1911, Hodeslea, Eastbourne.”
If this tale of three generations watched over by a great woman as she follows life’s passages from dashing bride to doting grandmother doesn’t epitomize the best of humanity, as symbolized by our continuity, then what greater love or beauty can sustain our lives in this vale of tears and fascination? Bless all the women of this world who nurture our heritage 
“I never met with so sweet a temper, so self-sacrificing and affectionate a disposition.”

— Thomas H. Huxley, on first meeting
Henrietta Heathorn in Australia, 1849
while too many men rush off to kill for ideals that might now be deeply and personally held but will often be viewed as repugnant by later generations.

My maternal grandparents—Irene and Joseph Rosenberg, or Grammy and Papa Joe to me—loved to read in their adopted language of English. My grandfather even bought a set of The Harvard Classics (the famous “Five Foot Shelf” of Western wisdom) to facilitate his assimilation to American life. I inherited only two of Papa Joe’s books, and nothing of a material nature could be more precious to me. The first bears a stamp of sale: “Carroll’s book store. Old, rare and curious books. Fulton and Pearl Sts. Brooklyn, N.Y.” Perhaps my grandfather obtained this volume from a Landsmann, for I can discern, through erasures on three pages of the book, the common Hungarian name “Imre.” On the front page of this 1892 edition of J. M. Greenwood’s Studies in English Grammar, my grandfather wrote in ink, in an obviously European hand, “Prop. of Joseph A. Rosenberg, New York.” To the side, in pencil, he added the presumed date of his acquisition: “1901. Oct. 25th.” Just below, also in pencil, he appended the most eloquent of all conceivable words for this context—even though he used the wrong tense, confusing the compound past of continuing action with an intended simple past to designate a definite and completed event (not bad for a barely fourteen-year-old boy just a month or two off the boat): “I have landed. Sept. 11th 1901.”
Of all that I shall miss in closing these columns, I shall feel most keenly the loss of fellowship and interaction with readers. Have we not shared 300 episodes of mutual learning? Early in the series, I began—more as a rhetorical device to highlight a spirit of interaction than as a practical tactic for gaining information—to pose 
Papa Joe’s prayer book

Papa Joe’s prayer book records the early death of his mother, Leni.
questions to readers when my research failed to resolve a textual byway. (As a longtime worshiper at the altar of detail, nothing niggles me more than a dangling little fact—partly, I confess, from an exaggerated sense of order, but mostly because big oaks do grow from tiny acorns, and one can never know in advance which acorn will reach heaven.)

As the series proceeded, I developed complete faith—not from hope, but from the solid pleasure of invariant success—that any posted question would elicit a host of interesting responses, including the desired factual resolution. How did the Italian word segue pass from the rarefied world of classical music into common speech as a synonym for “transition” (resolved by personal testimony of several early radio men, who informed me that in the 1920s they had transferred this term from their musical training to their new gigs as disk jockeys and producers of radio plays). Why did seventeenth-century engravers of scientific illustrations usually fail to draw snail shells in reverse on their plates—so that the final product, when printed on paper, would depict the snail’s actual direction of coiling—when they obviously understood the principle of inversion and always etched their verbal texts “backward” to ensure printed readability? Who were Mary Roberts, Isabella Duncan, and several other “invisible” women of Victorian science-writing who didn’t even win a line in such standard sources as the Encyclopaedia Britannica or the Dictionary of National Biography?
Thus, after citing my grandfather’s text en passant in an earlier essay, I may have wept for joy but could not feign complete surprise when I received the most wonderful of all letters from a reader: 
For years now I have been reading your books, and I think I should really thank you for the pleasure and intellectual stimulation I have received from you. But how to make even a small return for your essays? The answer came to me this week. I am a genealogist who specializes in passenger-list work. Last Sunday I was rereading that touching essay that features your grandfather, Joseph A. Rosenberg, who wrote “I have landed. Sept. 11, 1901.” It occurred to me that you might like to see his name on the passenger list of the ship on which he came.
I think I always knew that I might be able to find the manifest of Papa Joe’s arrival at Ellis Island. I even half intended to make the effort “someday.” But in honest moments of obeisance to the Socratic dictum “Know thyself,” I’m pretty sure that, absent this greatest of all gifts from a reader, I never would have found the time or made the move. (Moreover, I certainly hadn’t cited Papa Joe’s inscription in a lazy and intentional “fishing expedition” for concrete information. I therefore received the letter of resolution with pure exhilaration—as a precious item beyond price, freely given in fellowship, and so gratefully received without any conscious anticipation on my part.)
My grandfather traveled with his mother and two younger sisters on the SS Kensington, an American Line ship (launched in 1894 and scrapped in 1910) that could carry sixty passengers in first class and a thousand more in steerage—a good indication of the economics of travel and transport in these days of easy 
I loved my grandparents fiercely and reveled in their unconditional blessing and unvarying support—not always deserved, for I really did throw that rock at Harvey.
immigration for European workers, then so badly needed for the factories and sweatshops of a booming economy based on manual labor. The Kensington had sailed from Antwerp on August 31, 1901, and arrived in New York, as Papa Joe accurately recorded, on September 11. My page of the “List or Manifest of Alien Immigrants” includes thirty names, Jewish or Catholic by inference and hailing from Hungary, Russia, Romania, and Croatia. Papa Joe’s mother, Leni, listed as illiterate and thirty-five years of age, appears on line 22, with her three children just below: my grandfather, recorded as Josef and literate at age fourteen, and my dear aunts Regina and Gus, cited as Regine and Gisella (I never knew her real name) at five years and nine months old, respectively. Leni carried $6.50 to start her new life.

I had not previously known that my great-grandfather, Farkas Rosenberg (accented on the first syllable, pronounced “farkash,” and meaning “wolf” in Hungarian), had preceded the rest of his family and now appeared on the manifest as their sponsor, “Wolf Rosenberg, 644 East 6th Street.” I do not remember Farkas, who died during my third year of life, but I greatly value the touching tidbit of information that, for whatever reason, in his initial flurry of assimilation, Farkas had learned and begun to use the English translation of a name that strikes many Americans as curious or even amusing in sound—for he later reverted to Farkas, and no one in my family knew him by any other name.
My kind and diligent reader then bestowed an additional gift upon me by locating Farkas’s manifest as well. He had arrived, along with 800 other passengers in steerage, aboard the Kensington’s sister ship SS Southwark on June 13, 1900, listed as Farkas Rosenberg, illiterate at age thirty-four (although I am fairly sure he could at least read and probably write Hebrew) and sponsored by a cousin named Jos. Weiss (unknown to my family and perhaps an enabling fiction). Farkas, a carpenter by trade, arrived alone, with one dollar in his pocket.
"I have landed"

“I have landed”: Detail of front page of Papa Joe’s copy of J. M. Greenwood’s Studies in English Grammar
Papa Joe’s later story mirrors the tale of several million poor immigrants to a great land that did not welcome them with open arms (despite Lady Liberty’s famous words) but also did not foreclose the possibility of success if they could prevail by their own wits and unrelenting hard work. And who could, or should, have asked for more in those times? Papa Joe received no further schooling in America, save what experience provided and internal drive secured. As a young man, he went west for a time, working in the steel mills of Pittsburgh and on a ranch somewhere in the Midwest (not, as I later found out, as the cowboy of my dreams but as an accountant in the front office). His mother, Leni, died young (my mother, Eleanor, bears her name in remembrance), as my second book of his legacy testifies. Papa Joe ended up, along with so many Jewish immigrants, in the garment district of New York City, where, after severing his middle finger in an accident as a cloth cutter, he eventually figured out how to parlay his remarkable, albeit entirely untrained, artistic talents into a better job that provided eventual access to middle-class life (and afforded much titillation to his grandchildren)—as a designer of brassieres and corsets.
He met Irene, also a garment worker, when he lived as a boarder at the home of Irene’s aunt—for she had emigrated alone in 1910 at age fourteen, under her aunt’s sponsorship, after a falling-out with her father. What else can one say for the objective record (and what richness and depth could one not expose, at least in principle and for all people, at the subjective level of human life, passion, and pure perseverance)? Grammy and Papa Joe married young, and their only early portrait together radiates both hope and uncertainty. They raised three sons and a daughter; my mother alone survives. Two of their children finished college.
Somehow I always knew, although no one ever pressured me directly, that the third generation, with me as the first member thereof, would fulfill the deferred dream of a century, obtain an advanced education, and enter professional life. (My grandmother spoke Hungarian, Yiddish, German, and English but could only write her adopted language phonetically. I will never forget her embarrassment when I inadvertently read a shopping list she had written and realized that she could not spell. I also remember her joy when, invoking her infallible memory and recalling some old information acquired in her study for citizenship, she won $10 on a Yiddish radio quiz for correctly identifying William Howard Taft as our fattest president.)
I loved Grammy and Papa Joe separately. Divorce, however legal and religiously acceptable, did not represent an option in their world. Unlike Hal and Nettie Huxley, I’m not at all sure they would
I can say goodbye to this particular forum because I know that I will never run out of unkept promises or miles to walk.
have done it again. But they stuck together and prevailed, at least in peace, respect, and toleration, perhaps even in fondness. Had they not done so, I would not be here—and for this particular twig of evolutionary continuity, I could not be more profoundly grateful, in the most immediate of all conceivable ways. I also loved them fiercely, and I reveled in the absolute certainly of their unconditional blessing and unvarying support (not always deserved, of course, for I really did throw that rock at Harvey, even though Grammy slammed our front door on Harvey’s father, after delivering a volley of Yiddish curses amidst proclamations that her Stevele would never do such a thing, while knowing perfectly well that I surely could).

The tree of all life and the genealogy of each family share the same topology and the same secret of success in blending two apparently contradictory themes of continuity without a single hair’s breadth of breakage, and change without even a moment’s loss of a potential that need not be exploited in all episodes but must remain forever at the ready. These properties may seem minimal, even derisory, in a universe of such stunning complexity (whatever its inexplicable eternity or infinity). But this very complexity exalts pure staying power (and the lability that facilitates such continuity). Showy statues of Ozymandias quickly become lifeless legs in the desert; bacteria have scuttled around all the slings and arrows of outrageous fortune for 3.5 billion years and counting.
I believe in the grandeur of this view of life, the continuity of family lines, and the poignancy of our stories—of Nettie Heathorn, grown old as Granmoo and passing Tasso’s torch two generations after her initial lighting; of Papa Joe’s ungrammatical landing as a stranger in a strange land, and my prayer that, in some sense, he might see my work as a worthy continuation, also two generations later, of a hope that he fulfilled in a different way during his own lifetime. I suspect we feel the poignancy in such continuity because we know that our small realization of an unstated family promise somehow mirrors the larger way of all life and, by this affirmation of totality, becomes “right” in a sense too deep for either words or tears. I can therefore say goodbye to this particular forum because I know that I will never run out of unkept promises or miles to walk and that I may even continue to sprinkle the journey remaining before sleep with a new idea or two. This view of life continues, flowing ever forward, while the current patriarch of one tiny and insignificant twig pauses to honor the twig’s centennial in a new land by commemorating the first recorded words of a fourteen-year-old forebear.
Dear Papa Joe, I have been faithful to your dream of persistence and attentive to a hope that the increments of each worthy generation may buttress the continuity of evolution. You could write those wondrous words right at the beginning of your journey, amidst all the joy and terror of inception. I dared not repeat them until I could fulfill my own childhood dream—something that once seemed so mysteriously beyond any hope of realization to an insecure little boy in a garden apartment in Queens—to become a scientist and to make, by my own effort, even the tiniest addition to human knowledge of evolution and the history of life. But now, with my 300, so fortuitously coincident with the world’s new 1,000 and your own 100, perhaps I have finally won the right to restate your noble words and to tell you that their inspiration still lights my journey: I have landed. But I also can’t help wondering what comes next!
Stephen Jay Gould Harvard paleontologist Stephen Jay Gould contributes the last in a series of 300 essays that began in January 1974. Most have addressed evolutionary theory and the history of science, but Gould’s topics have ranged from the contingencies of life’s history and geologists’ perception of time to biology, social science, and baseball. According to Michael Shermer, of the Skeptics Society, the shortest essay (“Darwin’s Dilemma,” June 1974) ran 1,475 words, and the longest (“The Piltdown Conspiracy,” August 1980) ran 9,290 words. Many contain new discoveries, such as Gould’s original interpretations of the works of biologist Jean-Baptiste Lamarck, geologist Charles Lyell, and Leonardo da Vinci. During the same period, Gould has also managed to publish 22 books, 101 reviews, and 479 scientific and scholarly papers. His latest book, Crossing Over: Where Art and Science Meet, “coauthored with photographer Rosamond Wolff Purcell, has just been published by Three Rivers Press. A thousand-page technical tome,” The Structure of Evolutionary Theory, is forthcoming from Harvard University Press. Readers of Natural History can still look forward to occasional contributions by Gould in these pages.
SS Kensington ship manifest

The “List or Manifest of Alien Immigrants” of the SS Kensington for September 11, 1901, shows the names of the author’s relatives.



Copyright © Natural History Magazine, Inc

O primeiro artigo de Stephen Jay Gould na revista do Natural History Museum (1974)

Size and Shape

Picks from the Past: 
American Museum Natural History, January 1974

The immutable laws of design set limits on all organisms.


giraffe sjg
S.J.G.'s first “This View of Life” column
Who could believe an ant in theory? 
A giraffe in blueprint? 
Ten thousand doctors of what’s possible 
Could reason half the jungle out of being.
Poet John Ciardi’s lines reflect a belief that the exuberant diversity of life will forever frustrate man’s arrogant claims to omniscience. Yet, however much we celebrate diversity and revel in the peculiarities of animals, we must also acknowledge a striking “lawfulness” in the basic design of organisms. This regularity is most strongly evident in the correlation of size and shape.
Animals are physical objects. They are shaped to their advantage by natural selection. Consequently, they must assume forms best adapted to their size. The relative strength of such forces as gravity varies with size in a regular way, and animals respond by systematically altering their shapes.
The geometry of space itself is the major reason for correlations between size and shape. Simply by growing larger, an object that keeps the same shape will suffer a continual decrease in relative surface area. The decrease occurs because volume increases as the cube of length (length x length x length), while surface increases only as the square (length x length): in other words, volume grows more rapidly than surface.
Why is this important to animals? Many functions that depend upon surface must serve the entire volume of the body. Digested food passes to the body through surfaces; oxygen is absorbed through surfaces in respiration; the strength of a leg bone depends upon the area of its cross section, but the legs must hold up a body increasing in weight by the cube of its length. Galileo first recognized this principle in his “Discorsi” of 1638, the masterpiece he wrote while under house arrest by the Inquisition. He argued that the bone of a large animal must thicken disproportionately to provide the same relative strength as the slender bone of a small creature.
One solution to decreasing surface has been particularly important in the progressive evolution of large and complex organisms: the development of internal organs. The lung is, essentially, a richly convoluted bag of surface area for the exchange of gases; the circulatory system distributes material to an internal space that cannot be reached by direct diffusion from the external surface of large organisms; the villi of our small intestine increase the surface area available for absorption of food (small mammals neither have nor need them).
Some simpler animals have never evolved internal organs; if they become large, they must alter their entire shape in ways so drastic that plasticity for further evolutionary change is sacrificed to extreme specialization. Thus, a tapeworm may be 20 feet long, but its thickness cannot exceed a  fraction of an inch because food and oxygen must penetrate directly from the external surface to all parts of the body.
Other animals are constrained to remain small. Insects breathe through invaginations of the external surface. Since these invaginations must be more numerous and convoluted in larger bodies, they impose a size limit upon insect design: at the size of even a small mammal, an insect would be “all invagination” and have no room for internal parts.
We are prisoners of the perceptions of our size, and rarely recognize how different the world must appear to small animals. Since our relative surface area is so small at our large size, we are ruled by gravitational forces acting upon our weight. But gravity is negligible to very small animals with high surface to volume ratios; they live in a world dominated by surface forces and judge the pleasures and dangers of their surroundings in ways foreign to our experience.
An insect performs no miracle in walking up a wall or upon the surface of a pond; the small gravitational force pulling it down or under is easily counteracted by surface adhesion. Throw an insect off the roof and it floats gently down as frictional forces acting upon its surface overcome the weak influence of gravity.
The relative weakness of gravitational forces also permits a mode of growth that large animals could not maintain. Insects have an external skeleton and can only grow by discarding it and secreting a new one to accommodate the enlarged body. For a period between shedding and regrowth, the body must remain soft. A large mammal without any supporting structures would collapse to a formless mass under the influence of gravitational forces; a small insect can maintain its cohesion (related lobsters and crabs can grow much larger because they pass their “soft” stage in the nearly weightless buoyancy of water). We have here another reason for the small size of insects.
The creators of horror and science-fiction movies seem to have no inkling of the relationship between size and shape. These “expanders of the possible” cannot break free from the prejudices of their perceptions. The small people of Dr. CyclopsThe Bride of FrankensteinThe Incredible Shrinking Man, and Fantastic Voyage behave just like their counterparts of normal dimensions. They fall off cliffs or down stairs with resounding thuds; wield weapons and swim with olympic agility. The large insects of films too numerous to name continue to walk up walls or fly even at dinosaurian dimensions.
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Picks from the Past: January 1974

The immutable laws of design set limits on all organisms.


When the kindly entomologist of Them discovered that the giant queen ants had left for their nuptial flight, he quickly calculated this simple ratio: a normal ant is a fraction of an inch long and can fly hundreds of feet; these ants are many feet long and must be able to fly as much as 1,000 miles. Why, they could be as far away as Los Angeles! (Where, indeed, they were, lurking in the sewers.) But the ability to fly depends upon the surface area of the wings, while the weight that must be borne aloft increases as the cube of length. We may be sure that even if the giant ants had somehow circumvented the problems of breathing and growth by molting, their chances of getting off the ground would have been far worse than that of the proverbial snowball in hell.
Other essential features of organisms change even more rapidly with increasing size than the ratio of surface to volume. Kinetic energy, for example, increases as length raised to the fifth power. If a child half your height falls unsupported to the ground, its head will hit with not half, but only 1/32 the energy of yours in a similar fall. A child is protected more by its size than by a “soft” head. In return, we are protected from the physical force of its tantrums, for the child can strike with, not half, but only 1/32 of the energy we can muster. I have long had a special sympathy for the poor dwarfs who suffer under the whip of cruel Dr. Alberich in Wagner’s “Das Rheingold.” At their diminutive size, they haven’t a chance of extracting, with mining picks, the precious minerals that Alberich demands, despite the industrious and incessant leitmotif of their futile attempt.
This simple principle of differential scaling with increasing size may well be the most important determinant of organic shape. J.B.S. Haldane once wrote that “comparative anatomy is largely the story of the struggle to increase surface in proportion to volume.” Yet its generality extends beyond life, for the geometry of space constrains ships, buildings, and machines, as well as animals.
The great range of designs among medieval churches can be attributed partly to size. The twelfth-century parish church of Little Tey, Essex, England, was only 57 feet long and had a simple floor plan (lower right corner). The floor plan of Norwich Cathedral, also twelfth century, shows adaptations—transept, chapels—required for the 450-foot-long building. The need for light and support dictated complex cathedral layouts.
Medieval churches present a good testing ground for the effects of size and shape, for they were built in an enormous range of sizes before the invention of steel girders, internal lighting, and air conditioning permitted modern architects to challenge the laws of size. The tiny, twelfth-century parish church of Little Tey, Essex, England, is a broad, simple rectangular building with a semicircular apse. Light reaches the interior through windows in the outer walls. If we were to build a cathedral simply by enlarging this design, then the periphery of the outer walls and windows would increase as length, while the area that light must reach would increase as length times length. In other words, the size of the windows would increase far more slowly than the area that requires illumination. Candles have limitations; the inside of such a cathedral would have been darker than the deed of Judas. Medieval churches, like tapeworms, lack internal systems and must alter their shape to produce more external surface as they are made larger.
The large cathedral of Norwich, as it appeared in the twelfth century, had a much narrower rectangular nave; chapels have been added to the apse and a transept runs perpendicular to the main axis. All these “adaptations” increase the ratio of external wall and window to internal area. It is often stated that transepts were added to produce the form of a Latin cross. Theological motives may have dictated the position of such “outpouchings,” but the laws of size required their presence. Very few small churches have transepts.
I have plotted periphery versus the square root of area for floor plans of all postconquest Romanesque churches depicted in Clapham’s monograph of English ecclesiastical architecture. As we would predict, periphery increases more rapidly than the square root of area. Medieval architects had their rules of thumb, but they had, so far as we know, no explicit knowledge of the laws of size.
Like large churches, large organisms have very few options open to them. Above a certain size, large terrestrial organisms look basically alike—they have thick legs and relatively short, stout bodies. Large Romanesque churches are all relatively long and have abundant outpouchings. The invention of the flying buttress strengthened later Gothic buildings and freed more wall space for windows. Churches could then become relatively wider and simpler in outline (as in the Cathedral of Bourges).
The “invention” of internal organs helped animals retain the highly successful shape of a simple exterior enclosing a large internal volume; and the invention of internal lighting and structural steel has helped modern architects design large buildings with simple exteriors. The limits are expanded, but the laws still operate. No large Gothic church is higher than it is long, no large animal has a sagging middle like a dachshund.
I once overheard a children’s conversation in a New York playground. Two young girls were discussing the size of dogs. One asked: “Can a dog be as large as an elephant?” Her friend responded: “No, if it were as big as an elephant, it would look like an elephant.” I wonder if she realized how truly she spoke.

Remembering Stephen Jay Gould - American Museum of Natural History

Meu tributo ao grande biólogo evolucionista, precocemente desaparecido, de quem eu li quase tudo, e até fiz um grande artigo de resenha – antes de suas últimas obras – para homenagear o cientista que muito ensinou, que figura em meu próximo livro, como vou informar oportunamente. Eis ao artigo: 
Um Darwinista Heterodoxo: Stephen Jay Gould e a Sobrevivência dos (Cientistas) mais Aptos”, Genebra, 19 abril 1988, 25 p. Ensaio sobre a obra do naturalista norte-americano, com destaque para a teoria dos “equilíbrios pontuados” e suas conexões com o processo histórico. Revisto em 12 junho 1988, com base em comentários e observações de consultores encaminhados pelo Comitê Editorial da revista mensal da SBPC. Publicado em Ciência e Cultura (São Paulo: vol. 40, n. 12, dezembro de 1988, p. 1154-1163). Disponível neste link: 
https://www.academia.edu/5804779/159_Um_Darwinista_Heterodoxo_Stephen_Jay_Gould_e_a_Sobreviv%C3%AAncia_dos_Cientistas_mais_Aptos_1988_?sm=a
Paulo Roberto de Almeida

Remembering Stephen Jay Gould

by American Museum of Natural History (New York) 
on 
https://www.amnh.org/explore/news-blogs/news-posts/remembering-stephen-jay-gould

The Museum mourns the death of Stephen Jay Gould, among the most influential paleontologists and evolutionary biologists of the late 20th and early 21st centuries.
Dr. Gould's long-standing association with the Museum began as a doctoral student in the joint American Museum-Columbia University program working under the advisement of the eminent paleontologist and Museum Curator Norman Newell. As a student he also began a lifelong collaboration with Niles Eldredge, Curator Emeritus in the Division of Paleontology, on the theory of punctuated equilibrium.
The theory argues that evolutionary history is a pattern of rapid shifts followed by stasis rather than a slow and steady process of change. His association with the Museum continued with his regular contributions to Natural History magazine between 1974 and 2001, resulting in over 300 essays, many of which were collected in books such as Ever Since Darwin and Bully for Brontosaurus. He was also named the Frederick P. Rose Honorary Curator in the Museum's Division of Paleontology.
Gould began teaching at Harvard University in 1967 where he spent his entire career. At Harvard he held the titles Alexander Agassiz Professor of Zoology, Curator of Invertebrate Paleontology in the Museum of Comparative Zoology, and Professor of Geology. He was also Vincent Astor Visiting Research Professor of Biology at New York University. His honors included the prestigious Schuchert Award for excellence in paleontological research by a scientist under 40, the MacArthur Foundation "Genius" Fellowship, and "Scientist of the Year" by Discover magazine for the theory of punctuated equilibrium that he co-authored with Niles Eldredge. Gould was also a frequent contributor to Discover magazine.
He served as the President of the Paleontological Society and President of the American Association for the Advancement of Science. Gould won the National Magazine Award for Essays and Criticism in 1980 and in 1981 received both the American Book Award for The Panda's Thumb and the National Book Critic's Circle award for The Mismeasure of Man. His other books include The Flamingo's Smile, Hen's Teeth and Horse's Toes, An Urchin in the Storm, and Wonderful Life: The Burgess Shale and the Nature of History and his recently published comprehensive volume The Structure of Evolutionary Theory.
Gould regarded himself primarily as an evolutionary biologist, where his queries explored subjects from fossils to growth and development, speciation, extinction, adaptation as well as many more facets of the field. As a writer of science, philosophy, and history his interests embraced a great range of issues pertinent to both science and society. He wrote with passion, facility and clarity about such topics as racial stereotyping, the human genome, health and longevity, evolution and creationism, art, poetry, music, and baseball.
While a highly influential scientist in the areas of his specialty, he also made, through his writing and speaking, an unparalleled connection to the public concerning many aspects of science and its impact on humanity.
In Dr. Gould's memory, we present three essays from Natural History magazine:
This View of Life: Size and Shape
The introductory essay in Stephen Jay Gould's column "This View of Life," from the January 1974 issue of Natural History magazine.
This View of Life: The Creation Myths of Cooperstown
Or, why the Cardiff Giants are an unbeatable and appropriately named team.
This View of Life: I Have Landed
In the final essay of this twenty-seven-year series, the author reflects on continuity—from family history to the branching lineage of terrestrial life.

domingo, 11 de março de 2018

The Mismeasure of Man, Stephen Jay Gould - Book review, Paulo Roberto de Almeida

Sugestão aos Editores, Revista Humanidades, UnB

Paulo Roberto de Almeida
Brasília, 7 fevereiro 1987, 3 pp.
revista Humanidades
(Brasília, Ano IV, nº 14, agosto-outubro 1987, pp. 125-126).

Stephen Jay GOULD:
The Mismeasure of Man
New York and London: W. W. Norton and Company, 1981.



Se não estou errado, nenhum livro do geólogo e biólogo norte-americano Stephen Jay Gould foi ainda traduzido e editado no Brasil, o que é, a todos os títulos, lamentável. Geólogo de formação, o mais famoso dos "darwinistas" norte-americanos ensina essa disciplina, além de Biologia e História da Ciência, na Universidade de Harvard, detendo um currículo já impressionante de publicações. Os títulos de seus livros são por si sós indicativos de sua preocupação em ultrapassar a estrita barreira da especialização científica para alcançar um público mais amplo e diversificado: Ever Since Darwin, The Panda's Thumb, Hen’s Teeth and Horse’s Toes e, mais recentemente, The Flamingo Smile. O livro que agora se sugere aos editores brasileiros foi publicado logo após que The Panda’s Thumb foi agraciado com o "American Book Award for Science" de 1981 e dá continuidade aos esforços de Gould em ultrapassar as fronteiras da historia natural e penetrar nas areias movediças da história social. Esse tipo de bridge-building, característico de todos os trabalhos de Gould, e particularmente ressaltado neste ensaio sobre a "má medida" do homem, ou seja, a tentativa de classificar os grupos humanos através de pretensos critérios da objetividade cientifica.
A preocupação em hierarquizar os homens em função de características ditas "inatas", conformando uma espécie de "racismo cientifico", parece hoje ter assumido a vestimenta da Sociobiologia, cujos argumentos são facilmente desmontados por Gould. No passado, o "determinismo biológico" procurou medir a inteligência através de dois métodos que atingiram uma certa respeitabilidade em cada época. No século XIX, os "homens de ciência" desenvolveram a "craniometria", manipulando medições de cérebros e crâneos humanos apenas para "provar" que os negros e outros povos primitivos seriam naturalmente inferiores aos homens brancos. Alguns chegaram mesmo a ver na menor capacidade craniana da mulher, comparativamente à do homem, a justificativa natural de sua subordinação social. Já no século XX, o sistema classificatório assume a forma dos "testes de inteligência", que transformaram as medidas de QI em marketing de massa. Em ambos os casos, argumenta Gould, assistiu-se à abstração e à reificação da inteligência humana, transformando-a numa entidade singularmente individualizada, localizada no cérebro.
A mismeasure, criticada no livro de Gould, é assim uma prática "científica" de medição da inteligência humana, através de critérios quantitativos pretensamente objetivos, e a utilização dos números então obtidos para classificar e hierarquizar grupos humanos segundo uma escala valorativa, tendente a "demonstrar" que grupos subalternos – em termos de raça, classe ou sexo –são inatamente inferiores e merecem o status que tem. Gould demonstra, por seu lado, a debilidade científica e o contexto claramente político e social dos argumentos deterministas em biologia, criticando ao mesmo tempo o mito da Ciência como um empreendimento objetivo. A ciência, nas palavras de Gould, tem de ser vista e compreendida como um fenômeno social, um empreendimento humano, e não uma obra de robôs programados para coletar informação pura.
Ao contrário do que pretende a Sociobiologia, a biologia moderna provou, em notável refutação ao determinismo biológico, que o estoque genético é muito pouco diferenciado para todos os grupos humanos. Mas, este é um fato contingente da evolução natural e não uma verdade a priori ou necessária. Como afirma Gould, o mundo poderia ter conhecido uma ordem natural diferente: "Suponha, por exemplo, que uma das muitas espécies do nosso gênero ancestral Australopithecus tivesse sobrevivido – um cenário perfeitamente razoável teoricamente, já que as novas espécies emergem a partir da divisão das antigas (com as antecessoras normalmente sobrevivendo, pelo menos durante algum tempo), não pela transformação em massa dos ancestrais em seus descendentes. Nós – isto é, o Homo sapiens – teríamos então de nos defrontar com todos os dilemas morais decorrentes do relacionamento com espécies humanas de capacidade mental notoriamente inferior. O que teríamos feito com elas escravidão? extinção? coexistência? trabalho doméstico? reservas? zoológicos?
Da mesma forma, a nossa própria espécie, Homo sapiens, poderia ter incluído uma serie de subespécies (raças) com capacidades genéticas compreensivelmente diferentes. Se as espécies humanas fossem velhas de milhões de anos (algumas são) e se suas raças tivessem estado geograficamente separadas durante a maior parte desse tempo sem um intercâmbio genético significativo, então grandes diferenças genéticas se teriam lentamente acumulado entre os grupos. Mas, o Homo sapiens é velho de várias dezenas de milhares de anos, ou no máximo de algumas poucas centenas de milhares de anos, e todas as modernas raças humanas provavelmente se dividiram a partir de um ancestral comum há apenas algumas dezenas de milhares de anos atrás.
Uns poucos traços significativos de diferenças externas nos levou ao julgamento subjetivo da existência de grandes diferenças entre elas. Mas, os biologistas confirmaram recentemente que o conjunto das diferenças genéticas entre as raças humanas é incrivelmente pequeno. Apesar da frequência para diferentes estados de um gene diferir entre as raças, nós não encontramos "genes raciais"—isto é, características fixas em certas raças e ausentes em todas as outras" (pp.322-3).
A especificidade humana é primordialmente constituída pelo funcionamento do cérebro e as sociedades humanas mudam por evolução cultural e não como resultado da alteração biológica. Não há nenhuma evidência de uma mudança biológica na estrutura ou dimensão do cérebro desde que o Homo sapiens apareceu nos registros fósseis há cerca de 50 mil anos atrás. Assim, "a evolução biológica (darwiniana) continua em nossa espécie, mas o seu ritmo, comparado com a evolução cultural, é tão incomparavelmente lento que o seu impacto na história do Homo sapiens tem sido pequeno" (324).
A evolução cultural é assim a marca característica dos grupos humanos, e a transmissão cultural funda um novo tipo de evolução muito mais efetivo do que o darwiniano. Gould resume: "Os argumentos clássicos do determinismo biológico são deficientes porque as características que ele invoca para estabelecer distinções entre os grupos são na verdade o produto da evolução cultural" (325).
O desmascaramento da Sociobiologia é feito, no livro de Gould, em tom sereno, próprio a um darwinista tranquilo, em contraste com a atitude passional, enragée e pouco cientifica dos sociobiologistas. Trata-se, sem duvida alguma, de um grande mergulho na história dos preconceitos "científicos" dos últimos dois séculos, uma leitura, portanto, indispensável a todos aqueles que se interessam por nosso humilde destino de Homo sapiens.

Paulo Roberto de Almeida
Departamento de Sociologia – UnB 

sábado, 27 de agosto de 2011

Stephen Jay Gould on “The Bell Curve”

Stephen Jay Gould on “The Bell Curve”
Abagond, Sat 10 Jul 2010

Disclaimer: I have not read “The Bell Curve” for myself. The following is based instead on Stephen Jay Gould’s take on it. As a professor of biology at Harvard he knows the science way better than I do – like some of the important stuff “The Bell Curve” left out. He wrote about it in the 1996 edition of “The Mismeasure of Man”.

“The Bell Curve” (1994) by Richard J Herrnstein and Charles Murray is suppose to give the science proving that blacks in America have less intelligence in general than whites – and always will because intelligence, as measured by IQ, is mostly inborn or genetic. Further, they say this lack of intelligence is why things like crime, unemployment and illegitimacy are so high among blacks – and why throwing tax money at them will make little difference. In short: warmed-over social Darwinism.

As it turns out, even if you go by their numbers, IQ is weakly correlated with illegitimacy and so on – the numbers match up badly. So badly, in fact, that when they draw the lines on their graphs to show the relationships, they leave out the dots, the scatter of data points the lines are based on!

Further, correlation is not cause. After all, there is a much stronger correlation between your age and the national debt and yet neither causes the other.

And even Herrnstein and Murray admit that IQ is only 60% genetic. So only somewhat over half of these weak correlations-which-are-not-even-causes have anything to do with the inborn intelligence of black people.

And it gets worse:

All this is based on only one set of data with the numbers worked a certain way. But there are other sets of numbers, which they overlook – but would not if they had a strong case. And there are other ways to work the numbers. In fact, you can even show that it is impossible to measure intelligence by a single number!

That is no small point: Their argument depends on expressing intelligence as a single number. Not all scientists agree you can. The authors admit as much but do not make it plain why anyone would say that, a point which would cast their whole book into doubt – and make it clear that there are other ways to read the numbers. By leaving this out you do not see how weak their case is.

Their argument also depends on assuming that IQ is largely genetic therefore unchangeable. Not true.

Just because something is genetic does not mean it is set in stone. Height seems to be even more genetic than intelligence yet it is heavily affected by what you eat growing up – as people from India who bring up their children in America discover.

The same with IQ: in some countries it has gone up more in the past 50 years than the difference between blacks and whites in America. There is even a name for it: the Flynn Effect.