2020 고2 9월 모의고사 영어

18. Dear Residents, We truly value and appreciate all of our residents, including those with pets. We believe that allowing people to live with their pets enriches their lives. While we encourage you to enjoy your pets, we also want to ensure that you do not do so at the expense of your neighbors or your community. We have received reports that some residents have been disturbed by noise from dogs barking. Excessive barking by dogs disrupts everyone within hearing, particularly those who are elderly or sick or who have small children. We kindly ask that you keep your dogs’ noise levels to a minimum. Thank you for your assistance with this.

Regards, Conway Forest Apartments Management Office

 

19. Meghan looked up and saw angry gray clouds rolling across the water. The storm had turned and was coming her way. She stood up and reached for her sandals. That’s when she spotted the dog splashing around in the middle of the lake. At first she thought he was playing. She watched for a second or two, then realized the dog wasn’t playing. He was trying to keep from going under. With her heart pounding like a trip­hammer, she ran into the water and started swimming toward the dog. Before she got to the dog, the rain started. She saw the dog, and seconds later he was gone. She pushed forward frantically, her arms reaching out in long strokes, her legs kicking harder and faster.

 

20. Children may develop imaginary friends around three or four years of age. Imaginary friends are only a concern if children replace all social interactions with pretend friends. As long as children are developing socially with other children, then imaginary friends are beneficial. Parents often will need reassurance about imaginary friends; they should be respectful of the pretend friends, as well as of their child. Children who create imaginary friends should never be teased, humiliated, or ridiculed in any way. Parents may tire of including the friends in daily activities, such as setting an extra plate at dinner, but they should be reassured that the imaginary friends stage will pass. Until then, imaginary friends should be respected and welcomed by parents because they signify a child’s developing imagination.

 

21. If creators knew when they were on their way to fashioning a masterpiece, their work would progress only forward: they would halt their idea­-generation efforts as they struck gold. But in fact, they backtrack, returning to versions that they had earlier discarded as inadequate. In Beethoven’s most celebrated work, the Fifth Symphony, he scrapped the conclusion of the first movement because it felt too short, only to come back to it later. Had Beethoven been able to distinguish an extraordinary from an ordinary work, he would have accepted his composition immediately as a hit. When Picasso was painting his famous Guernica in protest of fascism, he produced 79 different drawings. Many of the images in the painting were based on his early sketches, not the later variations. If Picasso could judge his creations as he produced them, he would get consistently “warmer” and use the later drawings. But in reality, it was just as common that he got “colder.”

 

22. The psychology professor Dr. Kelly Lambert’s research explains that keeping what she calls the “effort­-driven rewards circuit” well engaged helps you deal with challenges in the environment around you or in your emotional life more effectively and efficiently. Doing hands-­on activities that produce results you can see and touch — such as knitting a scarf, cooking from scratch, or tending a garden — fuels the reward circuit so that it functions optimally. She argues that the documented increase in depression among Americans may be directly correlated with the decline of purposeful physical activity. When we work with our hands, it increases the release of the neuro-chemicals dopamine and serotonin, both responsible for generating positive emotions. She also explains that working with our hands gives us a greater sense of control over our environment and more connection to the world around us. All of which contributes to a reduction in stress and anxiety and builds resilience against the onset of depression.

 

23. It has long been held that the capacity for laughter is a peculiarly human characteristic. The witty Lucian of Samosata (2nd century A.D.) noted that the way to distinguish a man from a donkey is that one laughs and the other does not. In all societies humor is important not only in individual communication but also as a molding force of social groups, reinforcing their norms and regulating behavior. “Each particular time, each era, in fact each moment, has its own condition and themes for laughter... because of the major preoccupations, concerns, interests, activities, relations, and mode prevailing at the time.” The ultimate goal of anyone who studies another culture, such as ancient Greece, is to understand the people themselves who were more than the sum total of monuments, historical incidents, or social groupings. One way to approach this goal directly is to study the culture’s humor. As Goethe aptly observed: “Men show their characters in nothing more clearly than in what they think laughable.”

 

24. Since the early 1980s, Black Friday has been a kind of unofficial U.S. holiday marking the beginning of the holiday season and, consequently, the most profitable time for retailers in the year. But in recent years, a new movement has come to light, adding a more ecological philosophy. The movement is called Green Friday, and it seeks to raise awareness about the damage that Black Friday brings to the environment. Think of the carbon emissions caused by driving to the mall, the shipping of millions of items around the world, the plastic waste produced by packaging, and even the long-­term waste produced by mindlessly buying things we don’t need. Green Friday is about changing the way we see this day and switching our mindset from “buy, buy, buy” to finding alternative ways to give gifts during the holiday season so we don’t cause further damage to the Earth. Even if only a small percentage of the population makes the switch, it’ll mean great things for the environment.

 

26. Vera Rubin was born in 1928 in Philadelphia and grew up in Washington, D.C. It was in Washington, D.C. that she started to develop an interest in astronomy. She earned a master’s degree from Cornell University in 1951 and a doctor’s degree from Georgetown University in 1954. At the age of 22, she made headlines and shocked scientists with her theory about the motion of galaxies. In 1965, Rubin started as a researcher at the Carnegie Institution and became the first woman permitted to use the Hale Telescope. She made groundbreaking observations that provided evidence for the existence of a vast amount of dark matter in the universe. She won many prizes for her work, but never the Nobel Prize. She died in 2016 and is celebrated as someone who worked to lead the way for women in astronomy and physics.

 

29. 　All social interactions require some common ground upon which the involved parties can coordinate their behavior. In the interdependent groups in which humans and other primates live, individuals must have even greater common ground to establish and maintain social relationships. This common ground is morality. This is why morality often is defined as a shared set of standards for judging right and wrong in the conduct of social relationships. No matter how it is conceptualized — whether as trustworthiness, cooperation, justice, or caring — morality is always about the treatment of people in social relationships. This is likely why there is surprising agreement across a wide range of perspectives that a shared sense of morality is necessary to social relations. Evolutionary biologists, sociologists, and philosophers all seem to agree with social psychologists that the interdependent relationships within groups that humans depend on are not possible without a shared morality.

 

30. Spine­tingling ghost stories are fun to tell if they are really scary, and even more so if you claim that they are true. People get a thrill from passing on those stories. The same applies to miracle stories. If a rumor of a miracle gets written down in a book, the rumor becomes hard to challenge, especially if the book is ancient. If a rumor is old enough, it starts to be called a “tradition” instead, and then people believe it all the more. This is rather odd because you might think they would realize that older rumors have had more time to get distorted than younger rumors that are close in time to the alleged events themselves. Elvis Presley and Michael Jackson lived too recently for traditions to have grown up, so not many people believe stories like “Elvis seen on Mars.”

 

31. Firms in almost every industry tend to be clustered. Suppose you threw darts at random on a map of the United States. You’d find the holes left by the darts to be more or less evenly distributed across the map. But the real map of any given industry looks nothing like that; it looks more as if someone had thrown all the darts in the same place. This is probably in part because of reputation; buyers may be suspicious of a software firm in the middle of the cornfields. It would also be hard to recruit workers if every time you needed a new employee you had to persuade someone to move across the country, rather than just poach one from your neighbor. There are also regulatory reasons: zoning laws often try to concentrate dirty industries in one place and restaurants and bars in another. Finally, people in the same industry often have similar preferences (computer engineers like coffee, financiers show off with expensive bottles of wine). Concentration makes it easier to provide the amenities they like.

 

32. When we are emotionally charged, we often use anger to hide our more primary and deeper emotions, such as sadness and fear, which doesn’t allow for true resolution to occur. Separating yourself from an emotionally upsetting situation gives you the space you need to better understand what you are truly feeling so you can more clearly articulate your emotions in a logical and less emotional way. A time­out also helps spare innocent bystanders. When confronted with situations that don’t allow us to deal with our emotions or that cause us to suppress them, we may transfer those feelings to other people or situations at a later point. For instance, if you had a bad day at work, you may suppress your feelings at the office, only to find that you release them by getting into a fight with your kids or spouse when you get home later that evening. Clearly, your anger didn’t originate at home, but you released it there. When you take the appropriate time to digest and analyze your feelings, you can mitigate hurting or upsetting other people who have nothing to do with the situation.

 

33. A recent study shows that dogs appear to form mental images of people’s faces. Scientists placed 28 dogs in front of a computer monitor blocked by an opaque screen, then played a recording of the dog’s human guardian or a stranger saying the dog’s name five times through speakers in the monitor. Finally, the screen was removed to reveal either the face of the dog’s human companion or a stranger’s face. The dogs’ reactions were videotaped. Naturally, the dogs were attentive to the sound of their name, and they typically stared about six seconds at the face after the screen was removed. But they spent significantly more time gazing at a strange face after they had heard the familiar voice of their guardian. That they paused for an extra second or two suggests that they realized something was wrong. The conclusion drawn is that dogs form a picture in their mind, and that they can think about it and make predictions based on that picture. And, like us, they are puzzled when what they see or hear doesn’t match what they were expecting.

 

34. In the current landscape, social enterprises tend to rely either on grant capital (e.g., grants, donations, or project funding) or commercial financing products (e.g., bank loans). Ironically, many social enterprises at the same time report of significant drawbacks related to each of these two forms of financing. Many social enterprises are for instance reluctant to make use of traditional commercial finance products, fearing that they might not be able to pay back the loans. In addition, a significant number of social enterprise leaders report that relying too much on grant funding can be a risky strategy since individual grants are time limited and are not reliable in the long term. Grant funding can also lower the incentive for leaders and employees to professionalize the business aspects, thus leading to unhealthy business behavior. In other words, there seems to be a substantial need among social enterprises for alternatives to the traditional forms of financing.

 

35. The major oceans are all interconnected, so that their geographical boundaries are less clear than those of the continents. As a result, their biotas show fewer clear differences than those on land. The oceans themselves are continually moving because the water within each ocean basin slowly rotates. These moving waters carry marine organisms from place to place, and also help the dispersal of their young or larvae. Furthermore, the gradients between the environments of different areas of ocean water mass are very gradual and often extend over wide areas that are inhabited by a great variety of organisms of differing ecological tolerances. There are no firm boundaries within the open oceans although there may be barriers to the movement of organisms.

 

36. When a change in the environment occurs, there is a relative increase or decrease in the rate at which the neurons fire, which is how intensity is coded. Furthermore, relativity operates to calibrate our sensations. For example, if you place one hand in hot water and the other in iced water for some time before immersing them both into lukewarm water, you will experience conflicting sensations of temperature because of the relative change in the receptors registering hot and cold. Although both hands are now in the same water, one feels that it is colder and the other feels warmer because of the relative change from prior experience. This process, called adaptation, is one of the organizing principles operating throughout the central nervous system. It explains why you can’t see well inside a dark room if you have come in from a sunny day. Your eyes have to become accustomed to the new level of luminance. Adaptation explains why apples taste sour after eating sweet chocolate and why traffic seems louder in the city if you normally live in the country.

 

37. When an important change takes place in your life, observe your response. If you resist accepting the change it is because you are afraid; afraid of losing something. Perhaps you might lose your position, property, possession, or money. The change might mean that you lose privileges or prestige. Perhaps with the change you lose the closeness of a person or a place. In life, all these things come and go and then others appear, which will also go. It is like a river in constant movement. If we try to stop the flow, we create a dam; the water stagnates and causes a pressure which accumulates inside us. To learn to let go, to not cling and allow the flow of the river, is to live without resistances; being the creators of constructive changes that bring about improvements and widen our horizons.

 

38. Some resources, decisions, or activities are important (highly valuable on average) while others are pivotal (small changes make a big difference). Consider how two components of a car relate to a consumer’s purchase decision: tires and interior design. Which adds more value on average? The tires. They are essential to the car’s ability to move, and they impact both safety and performance. Yet tires generally do not influence purchase decisions because safety standards guarantee that all tires will be very safe and reliable. Differences in interior features — optimal sound system, portable technology docks, number and location of cup holders — likely have far more effect on the consumer’s buying decision. In terms of the overall value of an automobile, you can’t drive without tires, but you can drive without cup holders and a portable technology dock. Interior features, however, clearly have a greater impact on the purchase decision. In our language, the tires are important, but the interior design is pivotal.

 

39. In the West, an individual composer writes the music long before it is performed. The patterns and melodies we hear are pre­planned and intended. Some African tribal music, however, results from collaboration by the players on the spur of the moment. The patterns heard, whether they are the silences when all players rest on a beat or the accented beats when all play together, are not planned but serendipitous. When an overall silence appears on beats 4 and 13, it is not because each musician is thinking, “On beats 4 and 13, I will rest.” Rather, it occurs randomly as the patterns of all the players converge upon a simultaneous rest. The musicians are probably as surprised as their listeners to hear the silences at beats 4 and 13. Surely that surprise is one of the joys tribal musicians experience in making their music.

 

40. Some researchers at Sheffield University recruited 129 hobbyists to look at how the time spent on their hobbies shaped their work life. To begin with, the team measured the seriousness of each participant’s hobby, asking them to rate their agreement with statements like “I regularly train for this activity,” and also assessed how similar the demands of their job and hobby were. Then, each month for seven months, participants recorded how many hours they had dedicated to their activity, and completed a scale measuring their belief in their ability to effectively do their job, or their “self-efficacy.” The researchers found that when participants spent longer than normal doing their leisure activity, their belief in their ability to perform their job increased. But this was only the case when they had a serious hobby that was dissimilar to their job. When their hobby was both serious and similar to their job, then spending more time on it actually decreased their self-efficacy.

 

41-42.

U.S. commercial aviation has long had an extremely effective system for encouraging pilots to submit reports of errors. The program has resulted in numerous improvements to aviation safety. It wasn’t easy to establish: pilots had severe self-induced social pressures against admitting to errors. Moreover, to whom would they report them? Certainly not to their employers. Not even to the Federal Aviation Authority (FAA), for then they would probably be punished. The solution was to let the National Aeronautics and Space Administration (NASA) set up a voluntary accident reporting system whereby pilots could submit semi-anonymous reports of errors they had made or observed in others.

 

Once NASA personnel had acquired the necessary information, they would detach the contact information from the report and mail it back to the pilot. This meant that NASA no longer knew who had reported the error, which made it impossible for the airline companies or the FAA (which enforced penalties against errors) to find out who had sumitted the report. If the FAA had independently noticed the error and tried to invoke a civil penalty or certificate suspension, the receipt of self-report automatically exempted the pilot from punishment. When a sufficient number of similar errors had been collected, NASA would analyze them and issue reports and recommendations to the airlines and to the FAA. These reports also helped the pilots realize that their error reports were valuable tools for increasing safety.

2020 11 고2
18
To the Principal of Gullard High School, 
My name is Nancy Watson, and I am the captain of the student dance club at Gullard High School. We are one of the biggest faces of the school, winning a lot of awards and trophies. However, the school isn’t allowing our club to practice on the school field because a lot of teachers worry that we are going to mess up the field. This is causing us to lose practice time and ultimately results in creating a bad high school experience for us. We promise to use the space respectfully. Therefore, I’m asking you to allow us to use the school field for our dance practice. I would be grateful if you reconsider your decision. Thank you very much. 
Sincerely, Nancy Watson 

19
Ryan, an eleven-year-old boy, ran home as fast as he could. Finally, summer break had started! When he entered the house, his mom was standing in front of the refrigerator, waiting for him. She told him to pack his bags. Ryan’s heart soared like a balloon. Pack for what? Are we going to Disneyland? He couldn’t remember the last time his parents had taken him on a vacation.　His eyes beamed. “You’re spending the summer with uncle Tim and aunt Gina.” Ryan groaned. “The whole summer?” “Yes, the whole summer.” The anticipation he had felt disappeared in a flash. For three whole miserable weeks, he would be on his aunt and uncle’s farm. He sighed. 

20
When trying to convince someone to change their mind, most people try to lay out a logical argument, or make a passionate plea as to why their view is right and the other person’s opinion is wrong. But when you think about it, you’ll realize that this doesn’t often work. As soon as someone figures out that you are on a mission to change their mind, the metaphorical shutters go down. You’ll have better luck if you ask well-chosen, open-ended questions that let someone challenge their own assumptions. We tend to approve of an idea if we thought of it first — or at least, if we think we thought of it first. Therefore, encouraging someone to question their own worldview will often yield better results than trying to force them into accepting your opinion as fact. Ask someone well-chosen questions to look at their own views from another angle, and this might trigger fresh insights.  

21
In school, there’s one curriculum, one right way to study science, and one right formula that spits out the correct answer on a standardized test. Textbooks with grand titles like The Principles of Physics magically reveal “the principles” in three hundred pages. An authority figure then steps up to the lectern to feed us “the truth.”As theoretical physicist David Gross explained in his Nobel lecture, textbooks often ignore the many alternate paths that people wandered down, the many false clues they followed, the many misconceptions they had. We learn about Newton’s “laws” — as if they arrived by a grand divine visitation or a stroke of genius. but not the years he spent exploring, revising, and changing them. The laws that Newton failed to establish — most notably his experiments in alchemy, which attempted, and spectacularly failed, to turn lead into gold — don’t make the cut as part of the one-dimensional story told in physics classrooms. Instead, our education system turns the life stories of these scientists from lead to gold. 

22
The vast majority of companies, schools, and organizations measure and reward “high performance” in terms of individual metrics such as sales numbers, résumé accolades, and test scores. The problem with this approach is that it is based on a belief we thought science had fully confirmed: that we live in a world of “survival of the fittest.” It teaches us that those with the best grades, or the most impressive resume, or the highest point score, will be the ONLY ones to succeed. The formula is simple: be better and smarter and more creative than everyone else, and you will be successful. But this formula is inaccurate. Thanks to new research, we now know that achieving our highest potential is not about survival of the fittest but survival of the best fit. In other words, success is not just about how creative or smart or driven you are, but how well you are able to connect with, contribute to, and benefit from the ecosystem of people around you. 

23
I was brought up to believe that if I get lost in a large forest, I will sooner or later end up where I started. Without knowing it, people who are lost will always walk in a circle. In the book Finding Your Way Without Map or Compass, author Harold Gatty confirms that this is true. We tend to walk in circles for several reasons. The most important is that virtually no human has two legs of the exact same length. One leg is always slightly longer than the other, and this causes us to turn without even noticing it. In addition, if you are hiking with a backpack on, the weight of that backpack will inevitably throw you off balance. Our dominant hand factors into the mix too. If you are right-handed, you will have a tendency to turn toward the right. And when you meet an obstacle, you will subconsciously decide to pass it on the right side. 

24
In government, in law, in culture, and in routine everyday interaction beyond family and immediate neighbours, a widely understood and clearly formulated language is a great aid to mutual confidence. When dealing with property, with contracts, or even just with the routine exchange of goods and services, concepts and descriptions need to be as precise and unambiguous as possible, otherwise misunderstandings will arise. If full communication with a potential counterparty in a deal is not possible, then uncertainty and probably a measure of distrust will remain. As economic life became more complex in the later Middle Ages, the need for fuller and more precise communication was accentuated. A shared language facilitated clarification and possibly settlement of any disputes. In international trade also the use of a precise and well-formulated language aided the process of translation. The Silk Road could only function at all because translators were always available at interchange points. 

26
Alice Coachman was born in 1923, in Albany, Georgia, U.S.A. Since she was unable to access athletic training facilities because of the racism of the time, she trained using what was available to her, running barefoot along the dirt roads near her home and using homemade equipment to practice her jumping. Her talent in track and field was noticeable as early as elementary school. Coachman kept practicing hard and gained attention with her achievements in several competitions during her time in high school and college. In the 1948 London Olympics, Coachman competed in the high jump, reaching 5 feet, 6.5 inches, setting both an Olympic and an American record. This accomplishment made her the first black woman to win an Olympic gold medal. She is in nine different Halls of Fame, including the U.S. Olympic Hall of Fame. Coachman died in 2014, at the age of 90 in Georgia after she had dedicated her life to education. 

29
One of the keys to insects’ successful survival in the open air lies in their outer covering — a hard waxy layer that helps prevent their tiny bodies from dehydrating. To take oxygen from the air, they use narrow breathing holes in the body-segments, which take in air passively and can be opened and closed as needed. Instead of blood contained in vessels, they have free-flowing hemolymph, which helps keep their bodies rigid, aids movement, and assists the transportation of nutrients and waste materials to the appropriate parts of the body. The nervous system is modular — in a sense, each of the body segments has its own individual and autonomous brain — and some other body systems show a similar modularization. These are just a few of the many ways in which insect bodies are structured and function completely differently from our own. 

30
On projects in the built environment, people consider safety and functionality nonnegotiable. But the aesthetics of a new project — how it is designed — is too often considered irrelevant — The question of how its design affects human beings is rarely asked. People think that design makes something highfalutin, called architecture, and that architecture differs from building, just as surely as the Washington National Cathedral differs from the local community church. This distinction between architecture and building — or more generally, between design and utility — couldn’t be more wrong. More and more we are learning that the design of all our built environments matters so profoundly that safety and functionality must not be our only urgent priorities. All kinds of design elements influence people’s experiences, not only of the environment but also of themselves. They shape our cognitions, emotions, and actions, and even our well-being. They actually help constitute our very sense of identity.

31
Over 4.5 billion years ago, the Earth’s primordial atmosphere was probably largely water vapour, carbon dioxide, sulfur dioxide and nitrogen. The appearance and subsequent evolution of exceedingly primitive living organisms (bacteria-like microbes and simple single-celled plants) began to change the atmosphere, liberating oxygen and breaking down carbon dioxide and sulfur dioxide. This made it possible for higher organisms to develop. When the earliest known plant cells with nuclei evolved about 2 billion years ago, the atmosphere seems to have had only about 1 percent of its present content of oxygen. With the emergence of the first land plants, about 500 million years ago, oxygen reached about one-third of its present concentration. It had risen to almost its present level by about 370 million years ago, when animals first spread on to land. Today’s atmosphere is thus not just a requirement to sustain life as we know it ―it is also — a consequence of life.

32
One of the primary ways by which music is able to take on significance in our inner world is by the way it interacts with memory. Memories associated with important emotions tend to be more deeply embedded in our memory than other events. Emotional memories are more likely to be vividly remembered and are more likely to be recalled with the passing of time than neutral memories. Since music can be extremely emotionally evocative, key life events can be emotionally heightened by the presence of music, ensuring that memories of the event become deeply encoded. Retrieval of those memories is then enhanced by contextual effects, in which a recreation of a similar context to that in which the memories were encoded can facilitate their retrieval. Thus, re-hearing the same music associated with the event can activate intensely vivid memories of the event. 

33
We are now, instead of imposing ourselves on nature the other way around. Perhaps the clearest way to see this is to look at changes in the biomass — the total worldwide weight — of mammals. A long time ago, all of us humans together probably weighed only about two-thirds as much as all the bison in North America, and less than one-eighth as much as all the elephants in Africa. But in the Industrial Era our population exploded and we killed bison and elephants at industrial scale and in terrible numbers. The balance shifted greatly as a result. At present, we humans weigh more than 350 times as much as all bison and elephants put together. We weigh over ten times more than all the earth’s wild mammals combined. And if we add in all the mammals we’ve domesticated — cattle, sheep, pigs, horses, and so on — the comparison becomes truly ridiculous: we and our tamed animals now represent 97 percent of the earth’s mammalian biomass. This comparison illustrates a fundamental point: instead of being limited by the environment, we learned to shape it to our own ends. 

34
In the modern world, we look for certainty in uncertain places. We search for order in chaos, the right answer in ambiguity, and conviction in complexity. “We spend far more time and effort on trying to control the world,” best-selling writer Yuval Noah Harari says, “than on trying to understand it.” We look for the easy-to-follow formula. Over time, we lose our ability to interact with the unknown. Our approach reminds me of the classic story of the drunk man searching for his keys under a street lamp at night. He knows he lost his keys somewhere on the dark side of the street but looks for them underneath the lamp, because that’s where the light is. Our yearning for certainty leads us to pursue seemingly safe solutions — by looking for our keys under street lamps. Instead of taking the risky walk into the dark, we stay within our current state, however inferior it may be. 

35
As far back as the seventeenth century, hair had a special spiritual significance in Africa. Many African cultures saw the head as the center of control, communication, and identity in the body. Hair was regarded as a source of power that personified the individual and could be used for spiritual purposes or even to cast a spell. Since it rests on the highest point on the body, hair itself was a means to communicate with divine spirits and it was treated in ways that were thought to bring good luck or protect against evil. According to authors Ayana Byrd and Lori Tharps, “communication from the gods and spirits was thought to pass through the hair to get to the soul.” In Cameroon, for example, medicine men attached hair to containers that held their healing potions in order to protect the potions and enhance their effectiveness. 

36
Mark Granovetter examined the extent to which information about jobs flowed through weak versus strong ties among a group of people. He found that only a sixth of jobs that came via the network were from strong ties, with the rest coming via medium or weak ties; and with more than a quarter coming via weak ties. Strong ties can be more homophilistic. Our closest friends are often those who are most like us. This means that they might have information that is most relevant to us, but it also means that it is information to which we may already be exposed. In contrast, our weaker relationships are often with people who are more distant both geographically and demographically. Their information is more novel. Even though we talk to these people less frequently, we have so many weak ties that they end up being a sizable source of information, especially of information to which we don’t otherwise have access. 

37
When we think of culture, we first think of human cultures, of our culture. We think of computers, airplanes, fashions, teams, and pop stars. For most of human cultural history, none of those things existed. For hundreds of thousands of years, no human culture had a tool with moving parts. Well into the twentieth century, various human foraging cultures retained tools of stone, wood, and bone. We might pity human hunter-gatherers for their stuck simplicity, but we would be making a mistake. They held extensive knowledge, knew deep secrets of their lands and creatures. And they experienced rich and rewarding lives; we know so because when their ways were threatened, they fought to hold on to them, to the death. Sadly, this remains true as the final tribal peoples get overwhelmed by those who value money above humanity. We are living in their end times and, to varying extents, we’re all contributing to those endings. Ultimately our values may even prove self-defeating. 

38
Liquids are destructive. Foams feel soft because they are easily compressed; if you jump on to a foam mattress, you’ll feel it give beneath you. Liquids don’t do this; instead they flow. You see this in a river, or when you turn on a tap, or if you use a spoon to stir your coffee. When you jump off a diving board and hit a body of water, the water has to flow away from you. But the flowing takes time, and if your speed of impact is too great, the water won’t be able to flow away fast enough, and so it pushes back at you. It’s that force that stings your skin as you belly-flop into a pool, and makes falling into water from a great height like landing on concrete. The incompressibility of water is also why waves can have such deadly power, and in the case of tsunamis, why they can destroy buildings and cities, tossing cars around easily.

39
In the late twentieth century, researchers sought to measure how fast and how far news, rumours or innovations moved. More recent research has shown that ideas ― even emotional states and conditions ― can be transmitted through a social network. The evidence of this kind of contagion is clear: ‘Students with studious roommates become more studious. Diners sitting next to heavy eaters eat more food.’ However, according to Christakis and Fowler, we cannot transmit ideas and behaviours much beyond our friends’ friends’ friends (in other words, across just three degrees of separation). This is because the transmission and reception of an idea or behaviour requires a stronger connection than the relaying of a letter or the communication that a certain employment opportunity exists. Merely knowing people is not the same as being able to influence them to study more or over-eat. Imitation is indeed the sincerest form of flattery, even when it is unconscious. 

40
In 2011, Micah Edelson and his colleagues conducted an interesting experiment about external factors of memory manipulation. In their experiment, participants were shown a two minute documentary film and then asked a series of questions about the video. Directly after viewing the videos, participants made few errors in their responses and were correctly able to recall the details. Four days later, they could still remember the details and didn’t allow their memories to be swayed when they were presented with any false information about the film. This changed, however, when participants were shown fake responses about the film made by other participants. Upon seeing the incorrect answers of others, participants were also drawn toward the wrong answers themselves. Even after they found out that the other answers had been fabricated and didn’t have anything to do with the documentary, it was too late. The participants were no longer able to distinguish between truth and fiction. They had already modified their memories to fit the group. 

41-42
Evolutionary biologists believe sociability drove the evolution of our complex brains. Fossil evidence shows that as far back as 130,000 years ago, it was not unusual for Homo sapiens to travel more than a hundred and fifty miles to trade, share food and, no doubt, gossip. Unlike the Neanderthals, their social groups extended far beyond their own families. Remembering all those connections, who was related to whom, and where they lived required considerable processing power. 
It also required way finding savvy. Imagine trying to maintain a social network across tens or hundreds of square miles of Palaeolithic wilderness. You couldn’t send a text message to your friends to find out where they were ― you had to go out and visit them, remember where you last saw them or imagine where they might have gone. To do this, you needed navigation skills, spatial awareness, a sense of direction, the ability to store maps of the landscape in your mind and the motivation to travel around. Canadian anthropologist Ariane Burke believes that our ancestors developed all these attributes while trying to keep in touch with their neighbours. Eventually, our brains became primed for wayfinding. Meanwhile the Neanderthals, who didn’t travel as far, never fostered a spatial skill set; despite being sophisticated hunters, well adapted to the cold and able to see in the dark, they went extinct. In the prehistoric badlands, nothing was more helpful than a circle of friends. 

2020 11 고2
18
To the Principal of Gullard High School, 
My name is Nancy Watson, and I am the captain of the student dance club at Gullard High School. We are one of the biggest faces of the school, winning a lot of awards and trophies. However, the school isn’t allowing our club to practice on the school field because a lot of teachers worry that we are going to mess up the field. This is causing us to lose practice time and ultimately results in creating a bad high school experience for us. We promise to use the space respectfully. Therefore, I’m asking you to allow us to use the school field for our dance practice. I would be grateful if you reconsider your decision. Thank you very much. 
Sincerely, Nancy Watson 

19
Ryan, an eleven-year-old boy, ran home as fast as he could. Finally, summer break had started! When he entered the house, his mom was standing in front of the refrigerator, waiting for him. She told him to pack his bags. Ryan’s heart soared like a balloon. Pack for what? Are we going to Disneyland? He couldn’t remember the last time his parents had taken him on a vacation.　His eyes beamed. “You’re spending the summer with uncle Tim and aunt Gina.” Ryan groaned. “The whole summer?” “Yes, the whole summer.” The anticipation he had felt disappeared in a flash. For three whole miserable weeks, he would be on his aunt and uncle’s farm. He sighed. 

20
When trying to convince someone to change their mind, most people try to lay out a logical argument, or make a passionate plea as to why their view is right and the other person’s opinion is wrong. But when you think about it, you’ll realize that this doesn’t often work. As soon as someone figures out that you are on a mission to change their mind, the metaphorical shutters go down. You’ll have better luck if you ask well-chosen, open-ended questions that let someone challenge their own assumptions. We tend to approve of an idea if we thought of it first — or at least, if we think we thought of it first. Therefore, encouraging someone to question their own worldview will often yield better results than trying to force them into accepting your opinion as fact. Ask someone well-chosen questions to look at their own views from another angle, and this might trigger fresh insights.  

21
In school, there’s one curriculum, one right way to study science, and one right formula that spits out the correct answer on a standardized test. Textbooks with grand titles like The Principles of Physics magically reveal “the principles” in three hundred pages. An authority figure then steps up to the lectern to feed us “the truth.”As theoretical physicist David Gross explained in his Nobel lecture, textbooks often ignore the many alternate paths that people wandered down, the many false clues they followed, the many misconceptions they had. We learn about Newton’s “laws” — as if they arrived by a grand divine visitation or a stroke of genius. but not the years he spent exploring, revising, and changing them. The laws that Newton failed to establish — most notably his experiments in alchemy, which attempted, and spectacularly failed, to turn lead into gold — don’t make the cut as part of the one-dimensional story told in physics classrooms. Instead, our education system turns the life stories of these scientists from lead to gold. 

22
The vast majority of companies, schools, and organizations measure and reward “high performance” in terms of individual metrics such as sales numbers, résumé accolades, and test scores. The problem with this approach is that it is based on a belief we thought science had fully confirmed: that we live in a world of “survival of the fittest.” It teaches us that those with the best grades, or the most impressive resume, or the highest point score, will be the ONLY ones to succeed. The formula is simple: be better and smarter and more creative than everyone else, and you will be successful. But this formula is inaccurate. Thanks to new research, we now know that achieving our highest potential is not about survival of the fittest but survival of the best fit. In other words, success is not just about how creative or smart or driven you are, but how well you are able to connect with, contribute to, and benefit from the ecosystem of people around you. 

23
I was brought up to believe that if I get lost in a large forest, I will sooner or later end up where I started. Without knowing it, people who are lost will always walk in a circle. In the book Finding Your Way Without Map or Compass, author Harold Gatty confirms that this is true. We tend to walk in circles for several reasons. The most important is that virtually no human has two legs of the exact same length. One leg is always slightly longer than the other, and this causes us to turn without even noticing it. In addition, if you are hiking with a backpack on, the weight of that backpack will inevitably throw you off balance. Our dominant hand factors into the mix too. If you are right-handed, you will have a tendency to turn toward the right. And when you meet an obstacle, you will subconsciously decide to pass it on the right side. 

24
In government, in law, in culture, and in routine everyday interaction beyond family and immediate neighbours, a widely understood and clearly formulated language is a great aid to mutual confidence. When dealing with property, with contracts, or even just with the routine exchange of goods and services, concepts and descriptions need to be as precise and unambiguous as possible, otherwise misunderstandings will arise. If full communication with a potential counterparty in a deal is not possible, then uncertainty and probably a measure of distrust will remain. As economic life became more complex in the later Middle Ages, the need for fuller and more precise communication was accentuated. A shared language facilitated clarification and possibly settlement of any disputes. In international trade also the use of a precise and well-formulated language aided the process of translation. The Silk Road could only function at all because translators were always available at interchange points. 

26
Alice Coachman was born in 1923, in Albany, Georgia, U.S.A. Since she was unable to access athletic training facilities because of the racism of the time, she trained using what was available to her, running barefoot along the dirt roads near her home and using homemade equipment to practice her jumping. Her talent in track and field was noticeable as early as elementary school. Coachman kept practicing hard and gained attention with her achievements in several competitions during her time in high school and college. In the 1948 London Olympics, Coachman competed in the high jump, reaching 5 feet, 6.5 inches, setting both an Olympic and an American record. This accomplishment made her the first black woman to win an Olympic gold medal. She is in nine different Halls of Fame, including the U.S. Olympic Hall of Fame. Coachman died in 2014, at the age of 90 in Georgia after she had dedicated her life to education. 

29
One of the keys to insects’ successful survival in the open air lies in their outer covering — a hard waxy layer that helps prevent their tiny bodies from dehydrating. To take oxygen from the air, they use narrow breathing holes in the body-segments, which take in air passively and can be opened and closed as needed. Instead of blood contained in vessels, they have free-flowing hemolymph, which helps keep their bodies rigid, aids movement, and assists the transportation of nutrients and waste materials to the appropriate parts of the body. The nervous system is modular — in a sense, each of the body segments has its own individual and autonomous brain — and some other body systems show a similar modularization. These are just a few of the many ways in which insect bodies are structured and function completely differently from our own. 

30
On projects in the built environment, people consider safety and functionality nonnegotiable. But the aesthetics of a new project — how it is designed — is too often considered irrelevant — The question of how its design affects human beings is rarely asked. People think that design makes something highfalutin, called architecture, and that architecture differs from building, just as surely as the Washington National Cathedral differs from the local community church. This distinction between architecture and building — or more generally, between design and utility — couldn’t be more wrong. More and more we are learning that the design of all our built environments matters so profoundly that safety and functionality must not be our only urgent priorities. All kinds of design elements influence people’s experiences, not only of the environment but also of themselves. They shape our cognitions, emotions, and actions, and even our well-being. They actually help constitute our very sense of identity.

31
Over 4.5 billion years ago, the Earth’s primordial atmosphere was probably largely water vapour, carbon dioxide, sulfur dioxide and nitrogen. The appearance and subsequent evolution of exceedingly primitive living organisms (bacteria-like microbes and simple single-celled plants) began to change the atmosphere, liberating oxygen and breaking down carbon dioxide and sulfur dioxide. This made it possible for higher organisms to develop. When the earliest known plant cells with nuclei evolved about 2 billion years ago, the atmosphere seems to have had only about 1 percent of its present content of oxygen. With the emergence of the first land plants, about 500 million years ago, oxygen reached about one-third of its present concentration. It had risen to almost its present level by about 370 million years ago, when animals first spread on to land. Today’s atmosphere is thus not just a requirement to sustain life as we know it ―it is also — a consequence of life.

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One of the primary ways by which music is able to take on significance in our inner world is by the way it interacts with memory. Memories associated with important emotions tend to be more deeply embedded in our memory than other events. Emotional memories are more likely to be vividly remembered and are more likely to be recalled with the passing of time than neutral memories. Since music can be extremely emotionally evocative, key life events can be emotionally heightened by the presence of music, ensuring that memories of the event become deeply encoded. Retrieval of those memories is then enhanced by contextual effects, in which a recreation of a similar context to that in which the memories were encoded can facilitate their retrieval. Thus, re-hearing the same music associated with the event can activate intensely vivid memories of the event. 

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We are now, instead of imposing ourselves on nature the other way around. Perhaps the clearest way to see this is to look at changes in the biomass — the total worldwide weight — of mammals. A long time ago, all of us humans together probably weighed only about two-thirds as much as all the bison in North America, and less than one-eighth as much as all the elephants in Africa. But in the Industrial Era our population exploded and we killed bison and elephants at industrial scale and in terrible numbers. The balance shifted greatly as a result. At present, we humans weigh more than 350 times as much as all bison and elephants put together. We weigh over ten times more than all the earth’s wild mammals combined. And if we add in all the mammals we’ve domesticated — cattle, sheep, pigs, horses, and so on — the comparison becomes truly ridiculous: we and our tamed animals now represent 97 percent of the earth’s mammalian biomass. This comparison illustrates a fundamental point: instead of being limited by the environment, we learned to shape it to our own ends. 

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In the modern world, we look for certainty in uncertain places. We search for order in chaos, the right answer in ambiguity, and conviction in complexity. “We spend far more time and effort on trying to control the world,” best-selling writer Yuval Noah Harari says, “than on trying to understand it.” We look for the easy-to-follow formula. Over time, we lose our ability to interact with the unknown. Our approach reminds me of the classic story of the drunk man searching for his keys under a street lamp at night. He knows he lost his keys somewhere on the dark side of the street but looks for them underneath the lamp, because that’s where the light is. Our yearning for certainty leads us to pursue seemingly safe solutions — by looking for our keys under street lamps. Instead of taking the risky walk into the dark, we stay within our current state, however inferior it may be. 

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As far back as the seventeenth century, hair had a special spiritual significance in Africa. Many African cultures saw the head as the center of control, communication, and identity in the body. Hair was regarded as a source of power that personified the individual and could be used for spiritual purposes or even to cast a spell. Since it rests on the highest point on the body, hair itself was a means to communicate with divine spirits and it was treated in ways that were thought to bring good luck or protect against evil. According to authors Ayana Byrd and Lori Tharps, “communication from the gods and spirits was thought to pass through the hair to get to the soul.” In Cameroon, for example, medicine men attached hair to containers that held their healing potions in order to protect the potions and enhance their effectiveness. 

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Mark Granovetter examined the extent to which information about jobs flowed through weak versus strong ties among a group of people. He found that only a sixth of jobs that came via the network were from strong ties, with the rest coming via medium or weak ties; and with more than a quarter coming via weak ties. Strong ties can be more homophilistic. Our closest friends are often those who are most like us. This means that they might have information that is most relevant to us, but it also means that it is information to which we may already be exposed. In contrast, our weaker relationships are often with people who are more distant both geographically and demographically. Their information is more novel. Even though we talk to these people less frequently, we have so many weak ties that they end up being a sizable source of information, especially of information to which we don’t otherwise have access. 

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When we think of culture, we first think of human cultures, of our culture. We think of computers, airplanes, fashions, teams, and pop stars. For most of human cultural history, none of those things existed. For hundreds of thousands of years, no human culture had a tool with moving parts. Well into the twentieth century, various human foraging cultures retained tools of stone, wood, and bone. We might pity human hunter-gatherers for their stuck simplicity, but we would be making a mistake. They held extensive knowledge, knew deep secrets of their lands and creatures. And they experienced rich and rewarding lives; we know so because when their ways were threatened, they fought to hold on to them, to the death. Sadly, this remains true as the final tribal peoples get overwhelmed by those who value money above humanity. We are living in their end times and, to varying extents, we’re all contributing to those endings. Ultimately our values may even prove self-defeating. 

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Liquids are destructive. Foams feel soft because they are easily compressed; if you jump on to a foam mattress, you’ll feel it give beneath you. Liquids don’t do this; instead they flow. You see this in a river, or when you turn on a tap, or if you use a spoon to stir your coffee. When you jump off a diving board and hit a body of water, the water has to flow away from you. But the flowing takes time, and if your speed of impact is too great, the water won’t be able to flow away fast enough, and so it pushes back at you. It’s that force that stings your skin as you belly-flop into a pool, and makes falling into water from a great height like landing on concrete. The incompressibility of water is also why waves can have such deadly power, and in the case of tsunamis, why they can destroy buildings and cities, tossing cars around easily.

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In the late twentieth century, researchers sought to measure how fast and how far news, rumours or innovations moved. More recent research has shown that ideas ― even emotional states and conditions ― can be transmitted through a social network. The evidence of this kind of contagion is clear: ‘Students with studious roommates become more studious. Diners sitting next to heavy eaters eat more food.’ However, according to Christakis and Fowler, we cannot transmit ideas and behaviours much beyond our friends’ friends’ friends (in other words, across just three degrees of separation). This is because the transmission and reception of an idea or behaviour requires a stronger connection than the relaying of a letter or the communication that a certain employment opportunity exists. Merely knowing people is not the same as being able to influence them to study more or over-eat. Imitation is indeed the sincerest form of flattery, even when it is unconscious. 

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In 2011, Micah Edelson and his colleagues conducted an interesting experiment about external factors of memory manipulation. In their experiment, participants were shown a two minute documentary film and then asked a series of questions about the video. Directly after viewing the videos, participants made few errors in their responses and were correctly able to recall the details. Four days later, they could still remember the details and didn’t allow their memories to be swayed when they were presented with any false information about the film. This changed, however, when participants were shown fake responses about the film made by other participants. Upon seeing the incorrect answers of others, participants were also drawn toward the wrong answers themselves. Even after they found out that the other answers had been fabricated and didn’t have anything to do with the documentary, it was too late. The participants were no longer able to distinguish between truth and fiction. They had already modified their memories to fit the group. 

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Evolutionary biologists believe sociability drove the evolution of our complex brains. Fossil evidence shows that as far back as 130,000 years ago, it was not unusual for Homo sapiens to travel more than a hundred and fifty miles to trade, share food and, no doubt, gossip. Unlike the Neanderthals, their social groups extended far beyond their own families. Remembering all those connections, who was related to whom, and where they lived required considerable processing power. 
It also required way finding savvy. Imagine trying to maintain a social network across tens or hundreds of square miles of Palaeolithic wilderness. You couldn’t send a text message to your friends to find out where they were ― you had to go out and visit them, remember where you last saw them or imagine where they might have gone. To do this, you needed navigation skills, spatial awareness, a sense of direction, the ability to store maps of the landscape in your mind and the motivation to travel around. Canadian anthropologist Ariane Burke believes that our ancestors developed all these attributes while trying to keep in touch with their neighbours. Eventually, our brains became primed for wayfinding. Meanwhile the Neanderthals, who didn’t travel as far, never fostered a spatial skill set; despite being sophisticated hunters, well adapted to the cold and able to see in the dark, they went extinct. In the prehistoric badlands, nothing was more helpful than a circle of friends.