Showing posts with label evolution. Show all posts
Showing posts with label evolution. Show all posts

Wednesday, June 15, 2011

To Be or Not to Be Monogamous?


What does it mean to be monogamous? Is it:
  • Sexual exclusivity between two partners?
  • A two-party partnership, characterized by cooperation where resources are shared and children are produced?
  • A genetic commitment to producing offspring with a single partner?
  • A social system in which only two people at a time are contracted by marriage ?
Or is it perhaps some combination of these four?

Monday, March 28, 2011

Does Cooperation Really Make It Happen?


What didn’t Sesame Street teach us? Working together (sometimes) makes things go easier—whether you're a part of a group of Muppets who want a community garden, or perhaps hunter-gatherers managing your existence. Humans are the only species to cooperate to the degree that we do, and this cooperation may have allowed for many other derived social traits related to group living to emerge, including generosity, sharing, teaching and learning, and shared intentionality. But how and why did cooperation emerge in the first place? A recent paper in Science by Hill, Walker, and colleagues investigates cooperation in the course of human social and cultural evolution by looking to contemporary hunter-gatherer groups for some of the answers.

Tuesday, March 8, 2011

This Is Your Brain on Disney


Researchers have suggested that Disney generates a successful experience because our brains are responsive and receptive to art, creativity, storytelling, humor, wit, music, fantasy, and morality, all of which may have been important to social development—and feature heavily in the "Disney experience" in a rather amplified way.

Friday, March 4, 2011

Behind-the-Scenes at the American Museum of Natural History


Reception in the Hall of Saurischian Dinosaurs at the American Museum of Natural History's Dinosaur Tweetup.

The American Museum of Natural History (AMNH) had a hand in raising me. I literally spent summers there as a kid. The rotunda Barosaurus and I are old friends—it was under his watchful eye, after all, that I had my introduction to evolution, science, and natural history. With two working parents, the museum was the best way to spend my days and I roamed the Hall of Mammals and the fossil halls freely, soaking it all in. As I grew older, it was frequently my escape. And it still is. After a long week, or a particularly rough day, all it takes is quick run uptown on the C train to make me feel better. Leisurely afternoons in the Hall of Pacific Peoples—which often feels like another world—and the fossil halls are my favorite things. This place played a huge role in the ways I think, write, and talk about science. And last night, the AMNH Dinosaur Tweetup took me behind the scenes and showed me some of the ways the spaces I love came to be.

Thursday, December 23, 2010

On My Shelf: Written in Stone (Review)

Brian Switek's Written in Stone is a quiet testament to the power of the fossil record. Page after page, Switek takes the reader through a deftly narrated tale of evolution as told by fossilized remains that have been interpreted, reinterpreted, manipulated, marketed, destroyed, and ultimately preserved. This is a journey not just through natural history, but through science. The real impact of Written in Stone is that it highlights the cast of characters who shaped our understanding of evolution—allowing readers share firsthand with the frustrations, ambitions, conflicts, and successes of the scientists. It's certainly an interesting approach to a history that has the potential to be dry and unappealing.

Monday, December 6, 2010

The Evolutionary Roots of Talking With Our Hands



New Yorkers are hand talkers—we often use gestures to add emphasis to our conversations. Whether we're pointing to direct tourists, or waving to demonstrate our exasperation with traffic, drivers, or pedestrians, or trying to interject (New Yorkers don't interrupt!) we're gesticulating. We're not the only ones to do this, of course, but in my experience we do tend to employ this element of communication fairly frequently.

Wednesday, November 17, 2010

Monday, November 15, 2010

Evolving Together: Human Interference Not ALL Bad


There is no denying that humans have had a lasting impact on the environment, however biologist Jacques Blondel (2006) suggests that these ideas overlook the ways human activity has actually contributed to the maintenance, diversity, and embellishment of landscapes (714). Blondel acknowledges that there is a middle ground between these ideas when it comes to the relationship we have with our landscapes—a balance must exist between resistance and resilience, between disturbance and recovery. While Blondel focuses his discussion largely on the Mediterranean, perhaps these ideas can also be applied to our own local landscapes, and help us understand how biodiversity can evolve in these circumstances.

Thursday, November 11, 2010

On My Shelf: Charles Darwin's On the Origin of Species: A Graphic Adaptation (Review)

Christmas came a bit early this year when my friend Wendy handed me a brown envelope and said, "I got us a book." (I sometimes get to help her relieve some of the clutter in her apartment.) After peering excitedly into the envelope, I pulled out a slim paperback that changed my view on the power of graphic novels. 

Michael Keller and illustrator Nicolle Rager Fuller have breathed new life into Darwin's On the Origin of Species with an amazing graphic adaptation that will surely excite an entirely new generation about evolution. I have never read Darwin in this way, and I found myself rediscovering evolution in a very accessible, clear, and thoughtful way.

The chapters cover Darwin's main tenets, taking the reader step-by-step through the theory of evolution. Along the way, readers get a peek into Darwin's conflict and the state of the scientific community at the time. And as an added bonus at the end, Darwin "himself" responds to the advancements in our understanding of evolution that have unfolded since his passing. "Genius! Why hadn't I thoughts of that?!" he says of Mendel's discovery regarding heredity.

While Keller has done a fantastic job distilling Origin and combining the text with primary sources to generate an engaging dialogue with the reader, this work would not be half of what it is without Fuller, whose imagining of Darwin and Origin helps us potentially see the theory unfold through Darwin's eyes. The illustrations are vivid and detailed, and evoke a thoughtfulness reminiscent of the naturalist himself. This promises to be a powerful tool in teaching students about evolution—and may make a handy stocking stuffer for your favorite scientist.

--
Charles Darwin's On The Origin of Species: A Graphic Adaptation | Michael Keller (author) and Nicolle Rager Fuller (Illustrator) | Rodale Books | 192 pages | $19.99 (Hardcover) $14.99 (Paperback)

Monday, October 11, 2010

What Are Those Neanderthals Up to Now?

Scene from the Neanderthal diorama at the American Museum of Natural History.
Not shown: Male Neanderthal figure holding tool.

The Neanderthal story is quickly becoming a favorite serial—who knows what new drama the day will bring! Once regarded as brutish and stupid, it was accepted that they could not compete technologically and socially with early modern human (EMH) populations and were eradicated as the latter spread throughout the globe. But in the last few years, the reputation of our Neaderthal cousins has changed. In fact, we've learned that they were surprisingly like us in many ways: they painted shells for jewelry, provided care for those in need, and had a sophisticated tool industry (see more here). Their diorama at the American Museum of Natural History shows them in a family unit. Their genome has revealed few conspicuous differences, instead demonstrating that Neanderthals may have in fact left a trace of themselves in our own genes.

Thursday, August 19, 2010

Unmasking Eoanthropus dawsoni, The First Englishman


Archaeology can hold the key to national identity. Think about it: a find, even if it’s not King Tut’s funerary mask, can provide a testament to the accomplishments of a civilization. It anchors the heritage of a people. So it should come as no surprise that when archaeologists began to piece together the story of human evolution that everyone wanted to claim a place in the narrative—as evolution came to be more accepted in the late 19th-century, there was a certain pride in claiming a human ancestor within the boundaries of the nation. It provided a sense of origin for people and heightened their sense of nativism.

Thursday, December 3, 2009

Taxi! The Evolution of a New York City Symbol

Note: Updated to include information from NYC TLC spokesperson, Allan Fromberg.

It's simple enough. You step off the curb, raise your arm, and wait. Soon enough you'll catch the attention of those familiar yellow "mech-animals" that dominate the streets of New York City. Hailing a cab in New York City is as much part of the natural ebb and flow of daily life as morning coffee from the guy in the truck/cart outside of your building.

Life evolves with us. And what better example of this is there than the ubiquitous NYC cab? First appearing in the early 19th-century, they have come in all shapes and sizes, representing different decades and feelings, transforming somewhat reluctantly with the introduction of new technologies. Commanded by fearless drivers who don't flinch as they careen between buses and delivery trucks, cabs are fully integrated with life in Manhattan. They're everywhere—unless it's raining or you have somewhere to be—but this wasn't always the case. [Image Right: Taxicab with battle scars. Nov 2009.]

Before the automobile appeared on city streets at the end of the 19th-century, two-wheeled hansom cabs and four-seat hacks patrolled the streets transporting fares to their destinations in style. And they did indeed have a certain style to them. According to American author Vance Thompson, in those days to be a cabber imparted a certain status: "You [rode] in a cab in order to be seen riding in a cab." They were more than a convenience in their early days. Of course, as the city grew, the need for transportation grew with it, removing some of the elitism associated with cabbing. If you think the streets are chaotic now, Manhattan in the midst of the Civil War-era would have been impossible to navigate—horse-drawn and steam-powered omnibuses and railroads, carts, express wagons, and carriages all jockeyed for space. It was a dangerous place for pedestrians. Horses were unpredictable. They often ran away and were known to kick pedestrians. Although, in fairness to the horses, city life wasn't easy on them: they had an average career of about four years, and it wasn't uncommon for them to die in the streets (in which case, other horses would come and drag them away), which would only add to the congestion. It also smelled, as you can imagine. Congestion on mass transit meant that women were already experiencing sexual harassment in the form of wandering fingers and the subway characters I mapped out a few weeks ago were probably emerging in their earlier forms. While cabs still provided a means of travel, the city's rapid growth was outstripping its transportation resources, and people demanded a fix. [Image Top Left: Two-wheeled hansom and four-seat hack. Source: Outing magazine, Vol. XLIX No. 2, Nov. 1906 p. 130. | Image Bottom Right: Cabs on Fifth Avenue. Source: Outing magazine, Vol. XLIX No. 2, Nov. 1906 p. 132.]

A solution was proposed with electric vehicles. Although their large batteries were a bit unwieldy, they offered a cleaner alternative to horses—but they were still a minority in the early 1900s. In Taxi! A Social History of the New York City, Graham Russell Gao Hodges, a former driver, tells the readers that the modern cab industry arose as a result of a fare dispute. Harry N. Allen felt he was overcharged (which apparently wasn't uncommon), and vowed to start his own cab company. And he did: the New York Taxicab Company imported 600 gas-powered cabs from France in 1907. They were red and green and the drivers wore uniforms. As an introduction, Allen paraded them down Fifth Avenue and lined them up in front of the Plaza Hotel, ousting the hacks and hansom cabs parked there. He took measures to address two primary criticisms of the horse-drawn cabs: Allen's cabs had taximeters (for which they are named), allowing a set price to be charged for a specific distance, and Allen ordered drivers to be polite to fares. Gas-powered vehicles offered many advantages over horse and electric cabs, such as less maintenance and greater reliability—that is not to say that they didn't break down and emit plumes of smoke on occasion, but they didn't need to be fed, curbed, or recharged. Despite some initial labor problems, the New York Taxicab Company was here to stay. By the teens, there were dozens of additional taxi companies and the horse-powered cabs were quickly becoming antiquated.


[Image Above: It's not Fifth Avenue, but cab lines aren't all that uncommon. Shown here: cabs along Water Street, Nov. 2009.]

The familiar checkered cab appeared on the streets in the 1920s. They were painted yellow so that they would be easily spotted, but they weren't the only cabs on the street. In New York City, a fare war soon erupted as rival taxi companies, which included (then) auto-giant General Motors, vied for control of the market prompting the introduction of medallions in the 1930s as a means for the city to control the quality and costs associated with a cab ride. In the 1960s, the city cemented the yellow taxis as icons by ordering all medallion taxis to be painted yellow so that these city-sanctioned rides would be easily identifiable. Livery cabs could operate as any color other than yellow.

In recent years, steps have been taken to control the effects of the explosive number of cabs in the city. It echoes strangely of the efforts to replace the horse-drawn cabs. For example, electric vehicles have been re-introduced. According to some sources, electric vehicles were discontinued because they were too expensive to maintain, however NYC TLC spokesperson Allan Fromberg indicates that the technology simply wasn't in place to launch the initiative (see comments below). Although some concessions have been made to the digital-era we live in: for example, a Passenger Information Monitor (PIM), which includes a credit card register so that fares can be paid for with plastic, was made mandatory for all cabs. After initial protests it seems that cabbies have accepted the devices (partly because it didn't affect tips as originally feared.) Current cabs also seem to reflect our widening social circles as they include vehicles that can accommodate more passengers—and in fact, more "stuff."  [Image Right: Updated per information from Allan Fromberg (see comments): SUV-type vehicles have been introduced as taxi cabs. Nov. 09.]

The drivers through the ages remain constant as a group: they are minorities, who first drove cabs because it was one of the only open avenues for making money, and some of whom now drive cabs for what they hope will only be a temporary period. According to Hodges:
At first, most of these drivers were African Americans, who were licensed to drive by the city in the early nineteenth century. By the 1840s, as was the case with many semi-skilled and unskilled occupations, Irish immigrants pushed African Americans out of the trade. This early example of ethnic succession was more violent than later transitions, but it established a tradition of entering immigrant groups viewing hacking as a viable income and significant step up the ladder of economic mobility.
With each wave of immigration, new groups would establish themselves as drivers. In the 1920 and 1930s, there was a rise of Irish, Italian, and Jewish drivers. According to Edward Adler, onetime driver and author of Notes From a Dark Street, these drivers took these jobs so their children would not have to, and once their children had graduated from universities, they left the trade. This group began to phase out in the 1950s and were gone by the 1970s. In the 1950s, African and Latin Americans, and Middle Eastern immigrants began to fill the jobs vacated by the Irish, Italians, and Jews before them. Today drivers are likely to hail from any number of countries, including India, Pakistan, Russia, Haiti, and Africa. They are doctors, lawyers, scientists, and professors in their own countries, but find that they lack the qualifications needed to pursue their crafts here in the United States. They turn to driving cabs—so their children won't have to.

While riding in a cab may no longer carry a social status with it (though I wonder if a prolonged recession may change this), driving a cab seems to retain some of it's working class branding. Allen's issuance of uniforms created this image in the minds of cabbers, and while today's drivers don't wear uniforms, their role in ferrying people home after work, to and from parties, and other social gatherings. helps them retain this label even as they surely resent it. As an interview with at least one cabbie indicates, the labeling of drivers as members of a servant class, as well as their standing as immigrants, mean that they will never fully have a place in the mainstream. This is in spite of the fact that many cabbies have taken steps to purchase their own medallions so that they are driver-owners, and can keep the bulk of their earnings. Medallions come at a considerable cost (up to $600,000 for an independent owner medallion from $10.00 in the 1930s), but the cost has done little to mitigate the perception of the drivers—partly because so few of them actually own the medallions themselves, and there is no way to distinguish between a driver and and driver-owner, and it's doubtful that many passengers even care to make such a differentiation. Cabs are here to provide transportation, and it's expected that they will adapt to the city and to the fares who look for them after a night at a club or a bar. When cabbies went on strike in 2007 to protest the PIM, the city took great steps to emphasize that transit would not be crippled, as though to minimize the significance of these ever-present yellow arthropods.

While it's understandable that the city would want to minimize the significance of cabs, particularly in a strike situation, cabs have an undeniable presence. In the fall of 2007, cabs were given the opportunity to participate in the Garden in Transit public art project. To mark the 100th anniversary of the motorized cab, cabbies could volunteer to have their taxis decorated with a flower decal created by children and adults in hospitals, schools, and communities around Manhattan as a form of creative therapy. The project did little to raise the status of cabs or their drivers in the public's eye—according to responses at the Gothamist, most folks seemed to view the project as bland or wonder why real flowers weren't placed in cabs to dispel unpleasant odors—but the flowered cabs did serve as a reminder that cabs are very much a part of city life however, as they quickly spread throughout the city and became a part of the social landscape. [Image Right: Decals on NYC cabs. Image from New York City Daily Photo.]

The "City That Never Sleeps" needs transportation beyond mass transit to move its inhabitants—this has been true from the very start.  So cabs are here to stay, and their presence is decidedly mainstream (even if their drivers are kept on the fringes of society). Part of the reason cabs have survived in the face of more affordable rides, such as the subway and buses, is more than elitism: cabs offer a sense of safety which can be challenged underground late at night. And there are stories of cabbies who take their fare's safety seriously. Undoubtedly, the old issues will be raised again as we search for cheap, reliable, and greener methods of transportation.  As for those relics of the cab industry, the hansom and hack cabs, they haven't been completely eradicated—they've been relegated to the tourist trade and proffer rides around Central Park. [Image Left: A hack on Eleventh Avenue. Nov. 09.]

You know you have 'em, so share your taxi stories below.


Cited:
Hodges, Graham Russell Gao. Taxi!: A Social History of the New York City Cabdriver. John Hopkins University Press: 2007.

Thompson, Vance.
1906     "The New York Cab Driver and His Cab." Outing. Vol XLIX(2): pp 129-138.

Tuesday, October 20, 2009

Much Ado About the (Swine) Flu?

Have you gotten your seasonal flu shot?

Unless you've been living in some extremely remote region, completely cut off from the world (and then let's face it, you wouldn't be reading my post), you've likely heard of the dreaded H1N1 (swine) flu virus that's been making the rounds since the last flu season. Well, Stephen King predicted this would happen, so we should have been prepared! Seriously, go read the original version of the The Stand, and tell me that we aren't facing similar circumstances—well, okay, humankind hasn't been virtually eliminated except for two polarized factions aligned with opposing divine forces (at least not yet), but the part about a mutating flu virus and the resulting panic seems appropriate in this context. But all joking aside, people are definitely frightened, and its understandable to a certain degree.

Why are they frightened though? As a species, we've faced this before—something like it anyway—and (most of us) survived to tell the tale. It's a shame students don't learn more about past pandemics in history class—because pandemics have happened before. From 1918 to 1920, a version of the H1N1 virus swept the globe, called the Spanish Flu, killing anywhere from 50 to 100 million people. Approximately 1/3 of the world's population was infected. In the United States, 28% of Americans were infected, and approximately 675,000 people died. And we've faced—and spread—other viral outbreaks. Native American populations, as well as other Amerindian groups, were decimated by smallpox and other communicable diseases. And before contact with the new world, there was the Black Death of the 14th century, which caused approximately 60% of Europe's population to die painfully and grotesquely. And there have been subsequent outbreaks throughout the globe well into the 20th century. These outbreaks have been traced well into our history. For example, according to Barquet and Domingo (1997),
Smallpox is believed to have appeared at the time of the first agricultural settlements in northeastern Africa, around 10 000 BC. It probably spread from Africa to India by means of Egyptian merchants in the last millennium BC. The earliest evidence of skin lesions resembling those of smallpox is found on the faces of mummies from the time of the 18th and 20th Egyptian Dynasties (1570 to 1085 BC) and in the well-preserved mummy of Ramses V, who died as a young man in 1157 BC.
The bottom line is that viruses have been around a long time. An outbreak can be devastating, there's no doubt. And it's frightening, but we've learned strategies for coping with them that we shouldn't lose sight of.

It sometimes feels as though in this age of information, we have access to too much information. Shocking to think, isn't it? But there is so much opposing information available to a public that may not read science articles and blogs too closely, that they may have trouble deciding what information they can believe and what sources they can trust. All it takes is the click of a button to create widespread panic. Let's say a concerned mom wanted to read a bit about vaccinations before she takes Timmy in for his flu shot. She does a Google search for vaccinations and finds a link for The Vaccination Debate. Immediately, she posts information from this site on her Facebook page and she tweets about it to her network, and when she goes to pick up Timmy from school, she talks to other moms and dads picking up their kids. At home, while doing more research (because now she's worried about all the other vaccines Timmy has had) she learns about a leaked memo with information about the H1N1 vaccine. She doesn't check up on the source, and so she joins the parents who won't vaccinate their children against H1N1 due to concerns about possible side effects from the flu vaccine.

The H1N1 outbreak and the  push to vaccinate specific groups has sparked a furious debate—particularly for health care workers for whom the vaccine was declared mandatory in New York. A New York State judge suspended the regulation in the face of a lawsuit from three nurses who did not want to be subject to what they believe is an experimental vaccine. Their lawyer responded to the ruling with the following statement:
These three women are not saying, "We don’t want to be vaccinated" ... They’re saying: "We don’t need this vaccination. We don’t think, for any number of reasons, it’s effective or necessary. It might be harmful to us. It hasn’t been adequately tested."
The resulting comments from NYT readers have been interesting to read. One reader posted,
This is a victory for personal liberty, but a public health disaster.

While still another stated:
We require that students receive vaccinations before attending public schools, because otherwise we put their fellow students and instructors at risk of an outbreak. Health professionals work in close settings with individuals who may have the flu or may have compromised immune systems. It is the right thing to do for them to receive the vaccination.
And a third added,
In 15 years when you are curious as to why all three of your kids are on Ritalin, and you are having anxiety attacks, maybe you’ll have time to ponder what testing was/wasn’t done on your vaccine.
I can see both sides of the story—I wouldn't want to be injected with an experimental drug, but at the same time, if I'm hospitalized or in an at-risk group, I want to know that all the necessary precautions have been taken to keep me safe. I know that vaccinations against TB have saved millions of people, and Salk's polio vaccine changed the lives of countless others. A troubling aspect of influenza is that it mutates. From 1918 to about 1957, the H1N1 virus circulated in the fall and spring. In 1957, the virus shifted to a new strain, H2N2, and because people had not been exposed to the H2N2 strain previously, a rough flu season ensued. In 1977, the H1N1 reemerged with an altered genetic makeup and more people got sick. Are you seeing the pattern here? Of course, I'm not saying that you shouldn't worry, because scientists really don't fully understand how immunity to influenza work, but we have been through this before. The virus emerged, and because it was new to our immune system, we had no resistance to it and people got sick and some may have died from influenza-related complications. But over time, we developed a resistance to it, and we survived (relatively better than King's population in The Stand)—until the virus shifted and we started the cycle again. All strains of influenza can prove to be deadly, particularly to someone with a compromised respiratory system, but its not the flu itself that causes people to die—influenza is an underlying reason for death.

There is a lot of information about influenza and outbreaks available at our fingertips, but people have to go looking for it beyond a basic Google search, and given the rising panic about the availability of H1N1 vaccines, this doesn't appear to be happening. Our fear of the flu is creating disruptions in daily life activities—for example, sharing food at the office has been discouraged, shaking hands at church during a peace ritual has also been discouraged, and family members are finding themselves unable to visit relatives in the hospital. In The Stand, people start to regard each other suspiciously, and a process of shutting out others begins, so that people ultimately die alone. We've adapted to this type of environment before and we know what measures work to protect us: vaccines, hand washing, covering your mouth when you sneeze or cough, seeing a doctor when you're ill, etc. Of course, by the 19th century, it was clear the Black Death bacterium could become drug resistant, and strike with renewed vigor. Yes, it's frightening. Frightening that in today's age of amazing scientific breakthroughs that something as simple as the flu can aggravate other symptoms leading to death. But we live in an age where we can mobilize quickly and minimize tragedy. We created a vaccine for this strain of H1N1 in record time—which of course raised concerns about its effectiveness. But does it also reflect a disbelief that we could mobilize so quickly?

The evidence in favor of vaccines outweighs the consequences, but that doesn't mean that one shouldn't be cautious of course. Vaccinations do have minor side effects that almost everyone feels, such as body aches, a low-grade fever (under 101 degrees F), and soreness at the site of the injection. I know of at least one person for whom these symptoms masked a respiratory infection that caused him to land in the hospital for three days. But your health care provider should be able to accurately advise which vaccines you need—and if you're looking for more information about H1N1, the CDC has a great site with lots of information for the public (and you may want to talk to your PCP). Another good site for information is Flu.gov.

Share your thoughts on vaccines, the H1N1 virus, the flu, or my questions in the comments box below.

All virus photos courtesy of the CDC.

Technorati Tags: H1N1, pandemic, influenza, virus

Monday, October 19, 2009

Umbrella Politics: Arguments for Complex Social Organization in the Rain

We've been having a rainy bout here in New York, and with the rain comes the requisite rain boots and umbrellas. Navigating crowded city streets during peak times with umbrellas is no mean feat. Umbrellas become an extension of human anatomy as they bob along with their users; some are taller than others (due to the height of the user), some more colorful than others, and some are larger than others, but all require the user to dart and weave and shift to accommodate other umbrella owners—it’s almost poetic. But there’s something more to it: the coordinated efforts of umbrella users can help us discuss the complexities of social organization.


It’s not quite clear when tool use was introduced in our evolutionary history. The oldest identified tools come to us from the Oldowan Gorge in Tanzania. These seemingly simple stone tools are known as (can you guess?) the Oldowan Tool Industry and they appeared approximately 2.6 mya. Of course, one supposes that these were not the first tools, but rather the first implements archaeologists have found that could be readily identified as such—particularly since chimps, orangutans, gorillas, and some other non-human primates have shown that they can use tools for their benefit (see video below). Olduwan tools were likely produced by both Australopithecus and Homo, but they are most frequently linked to Homo habilis—a species that we know little about, but lived during the Olduwan period. Future findings may likely attribute the Olduwan industry to earlier ancestors as there is already evidence that Australopithecus garhi may have had a hand (no pun intended) in making these implements.



So what do these tools have to do with umbrellas? Well, umbrellas are tools, aren’t they? They are highly visible—but simple—tools. They’re portable coverings that protect us from the elements. They don’t do anything fancy, such as allowing us to calculate restaurant tips or find directions or update our Facebook statuses on-the-go, they don’t allow us to record our thoughts on paper, or carry liquids over distances for later consumption—they provide the simple convenience of staying dry. The development of tools in our evolutionary history necessitates cognitive and social development. Think about it: you’re wandering the grasslands with a chopper and you’ve gotten pretty handy with it at cracking nuts. You’ve probably shown your offspring how to make and use a chopper, just as you might have learned how to make and use these tools from your parental groups. The success and survival of the group you wander with has depended heavily on this shared knowledge. Now umbrella use doesn’t protect us from predators (unless you’re using it to fend off your fellow pedestrians), or allow us to feed ourselves (although it can get you to your local Whole Foods nice and dry), but in observing the social maneuvers they require, we can see traces of our social order.


Anyone who’s been caught out in the rain without an umbrella knows the benefit of having a friend who does have one. Umbrellas facilitate relationships and cooperation. In sharing cover from the rain with you, your friend has weighed the benefits of sharing—and consequently your relationship. I’m not saying that your friend stands there and makes a list of all the reasons why he should give your cover, but there is something about the nature of your relationship that encourages sharing. He offers you shelter because your relationship encourages him to do so. You might be less likely—and possibly find it rather uncomfortable—to share such a close space with someone you didn’t know very well. Now if you don’t have a friend with an umbrella, and you unfortunately are caught out in the rain, you need to strategize the quickest method of reaching dry areas—in the photo shown, the target area is a subway entrance. This requires utilizing cognitive skills to plot the fastest method of reaching your target area, which may mean using alternative routes (e.g., cutting across the street, walking under eaves), or creating make-shift covers (e.g., holding your jacket over your head).

Physical movement is also influenced by umbrellas. In bottle-neck situations, such as at the entrance to a subway or building, individuals with open umbrellas meet and pass individuals with closed umbrellas. These are sites of change: umbrellas are closed and opened as their users enter new environments. Because umbrellas are rather large, the coordination must be precise. and despite this attempted exactness, it can be complicated. Here are a few strategies:

1. Individuals enter the subway with umbrellas open (to stay dry until they are completely covered) by staying the right. Individuals exit the subway on the left-side of the staircase with umbrellas closed.


1a. Individuals exiting the subway duck under fellow pedestrians with open umbrellas—opening their own umbrellas only after they have fully cleared umbrellas entering the bottleneck.


2. Individuals enter and exit the subway with open umbrellas. They remain on the prescribed sides for passing. However, note the gentleman on the left has his umbrella raised higher above his head and his fellow pedestrians to allow easy passage.


3. Taking refuge in the entrance of a bank, these red umbrella users are confronted by a black umbrella user who needs access to the building.


3a. The red umbrella users separate briefly opening the path to the door.


3b. The red umbrella holder provides the black umbrella user with cover while the black umbrella is closed and the user enters the building.


4. We even take specific steps to transport umbrellas recently used so that they cause the least amount of discomfort for fellow companions. Umbrellas are folded and held to allow them to drip excess water onto the floor.



And let’s not forget those ubiquitous umbrella vendors who appear when the weather is bad. These folks are making a profit (although it may be less as more people carry umbrellas with them) by making tools available when we need them. Certainly as social organizations grew more complex, our ancestors could have identified individuals proficient at making choppers, flakes, scrapers, and awls. These individuals could have become esteemed providers of these instruments, or teachers of how to manipulate stones to achieve these results—we truthfully don’t know much about the social organization of our ancestors, so this is speculation. And the umbrella vendors of today don’t enjoy esteemed positions. Nonetheless, the availability of this tool encourages our social relationships—its influence on our social organization is evidence of this.


Do you have an umbrella story to share? Can you provide examples to the contrary—e.g., being dripped on or poked by a careless umbrella user? (I certainly have, especially since I happen to be shorter than the general population, but these examples aren’t necessarily evidence that these propositions are false, rather that exceptions can exist. I’m sure human evolution is littered with examples of persons who ran contrary to social order—either unconsciously, or by choice.) Have you witnessed a complex umbrella “dance” related to a social situation—e.g., a couple on a date? Share your stories below.