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Previous Year Questions
The author’s overall tone in the first paragraph can be described as
Video Explanation

The contrasting reactions to the Chinese and Israeli “contaminations” of lunar space
Video Explanation

The author mentions all of the following reasons to dismiss concerns about contaminating Mars EXCEPT:
Video Explanation

The author is unlikely to disagree with any of the following EXCEPT:
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
There is a group in the space community who view the solar system not as an opportunity to expand human
potential but as a nature preserve, forever the provenance of an elite group of scientists and their sanitary
robotic probes. These planetary protection advocates [call] for avoiding “harmful contamination” of celestial
bodies. Under this regime, NASA incurs great expense sterilizing robotic probes in order to prevent the
contamination of entirely theoretical biospheres ...
Transporting bacteria would matter if Mars were the vital world once imagined by astronomers who mistook
optical illusions for canals. Nobody wants to expose Martians to measles, but sadly, robotic exploration reveals
a bleak, rusted landscape, lacking oxygen and flooded with radiation ready to sterilize any Earthly microbes.
Simple life might exist underground, or down at the bottom of a deep canyon, but it has been very hard to find
with robots. . . . The upsides from human exploration and development of Mars clearly outweigh the welfare of
purely speculative Martian fungi ...
The other likely targets of human exploration, development, and settlement, our moon and the asteroids, exist
in a desiccated, radiation-soaked realm of hard vacuum and extreme temperature variations that would kill
nearly anything. It’s also important to note that many international competitors will ignore the demands of
these protection extremists in any case. For example, China recently sent a terrarium to the moon and
germinated a plant seed—with, unsurprisingly, no protest from its own scientific community. In contrast, when it
was recently revealed that a researcher had surreptitiously smuggled super-resilient microscopic tardigrades
aboard the ill-fated Israeli Beresheet lunar probe, a firestorm was unleashed within the space community ...
NASA’s previous human exploration efforts made no serious attempt at sterility, with little notice. As the Mars
expert Robert Zubrin noted in the National Review, U.S. lunar landings did not leave the campsites cleaner than
they found it. Apollo’s bacteria-infested litter included bags of feces. Forcing NASA’s proposed Mars exploration
to do better, scrubbing everything and hauling out all the trash, would destroy NASA’s human exploration budget
and encroach on the agency’s other directorates, too. Getting future astronauts off Mars is enough of a
challenge, without trying to tote weeks of waste along as well.
A reasonable compromise is to continue on the course laid out by the U.S. government and the National
Research Council, which proposed a system of zones on Mars, some for science only, some for habitation, and
some for resource exploitation. This approach minimizes contamination, maximizes scientific exploration ...
Mars presents a stark choice of diverging human futures. We can turn inward, pursuing ever more limited
futures while we await whichever natural or manmade disaster will eradicate our species and life on Earth.
Alternatively, we can choose to propel our biosphere further into the solar system, simultaneously protecting
our home planet and providing a backup plan for the only life we know exists in the universe. Are the lives on
Earth worth less than some hypothetical microbe lurking under Martian rocks?
The author is unlikely to disagree with any of the following EXCEPT:
Video Explanation

The author mentions all of the following reasons to dismiss concerns about contaminating Mars EXCEPT:
Video Explanation

The author’s overall tone in the first paragraph can be described as
Video Explanation

The contrasting reactions to the Chinese and Israeli “contaminations” of lunar space
Video Explanation

The author believes that a liberal arts education combined with participation in language preservation
empower students in all of the following ways EXCEPT that they will
Video Explanation

It can be inferred from the passage that it is likely South America had a slightly better language survival rate
than North America for all of the following reasons EXCEPT:
Video Explanation

Which one of the following hypothetical scenarios, if true, would most strongly undermine the central ideas
of the passage?
Video Explanation

In the context of the passage, which one of the following hypothetical scenarios, if true, is NOT an example
of the kind of loss that occurs when a language becomes extinct?
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
Languages become endangered and die out for many reasons. Sadly, the physical annihilation of communities
of native speakers of a language is all too often the cause of language extinction. In North America, European
colonists brought death and destruction to many Native American communities. This was followed by US
federal policies restricting the use of indigenous languages, including the removal of native children from their
communities to federal boarding schools where native languages and cultural practices were prohibited. As
many as 75 percent of the languages spoken in the territories that became the United States have gone extinct,
with slightly better language survival rates in Central and South America ...
Even without physical annihilation and prohibitions against language use, the language of the "dominant"
cultures may drive other languages into extinction; young people see education, jobs, culture and technology
associated with the dominant language and focus their attention on that language. The largest language
"killers" are English, Spanish, Portuguese, French, Russian, Hindi, and Chinese, all of which have privileged
status as dominant languages threatening minority languages.
When we lose a language, we lose the worldview, culture and knowledge of the people who spoke it,
constituting a loss to all humanity. People around the world live in direct contact with their native environment,
their habitat. When the language they speak goes extinct, the rest of humanity loses their knowledge of that
environment, their wisdom about the relationship between local plants and illness, their philosophical and
religious beliefs, as well as their native cultural expression (in music, visual art and poetry) that has enriched
both the speakers of that language and others who would have encountered that culture ...
As educators deeply immersed in the liberal arts, we believe that educating students broadly in all facets of
language and culture ... yields immense rewards. Some individuals educated in the liberal arts tradition will
pursue advanced study in linguistics and become actively engaged in language preservation, setting out for the
Amazon, for example, with video recording equipment to interview the last surviving elders in a community to
record and document a language spoken by no children.
Certainly, though, the vast majority of students will not pursue this kind of activity. For these students, a liberal
arts education is absolutely critical from the twin perspectives of language extinction and global citizenship.
When students study languages other than their own, they are sensitized to the existence of different cultural
perspectives and practices. With such an education, students are more likely to be able to articulate insights
into their own cultural biases, be more empathetic to individuals of other cultures, communicate successfully
across linguistic and cultural differences, consider and resolve questions in a way that reflects multiple cultural
perspectives, and, ultimately extend support to people, programs, practices, and policies that support the
preservation of endangered languages.
There is ample evidence that such preservation can work in languages spiraling toward extinction. For example,
Navajo, Cree, and Inuit communities have established schools in which these languages are the language of
instruction, and the number of speakers of each has increased.
In the context of the passage, which one of the following hypothetical scenarios, if true, is NOT an example
of the kind of loss that occurs when a language becomes extinct?
Video Explanation

Which one of the following hypothetical scenarios, if true, would most strongly undermine the central ideas
of the passage?
Video Explanation

It can be inferred from the passage that it is likely South America had a slightly better language survival rate
than North America for all of the following reasons EXCEPT:
Video Explanation

The author believes that a liberal arts education combined with participation in language preservation
empower students in all of the following ways EXCEPT that they will
Video Explanation

In the context of the passage, we can infer that to succeed in the liquor industry in China, a marketing firm
must consider all of the following factors affecting the Chinese liquor market EXCEPT that
Video Explanation

In the context of the passage, it is most likely that the author refers to Moutai’s marketing strategy as “the
unholy trinity” because
Video Explanation

Which one of the following is both a reason for Moutai’s success as well as a possible threat to that
success?
Video Explanation

The phrase “would make it an invention to rival gunpowder” has been used in the passage in a sense that is
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
Moutai has been the global booze sensation of the decade. A bottle of its Flying Fairy, which sold in the 1980s
for the equivalent of a dollar, now retails for $400. Moutai’s listed shares have soared by almost 600% in the
past five years, outpacing the likes of Amazon ...
It does this while disregarding every Western marketing mantra. It is not global, has meagre digital sales and
does not appeal to millennials. It scores pitifully on environmental, social and government measures. In the Boy
Scout world of Western business, it would leave a bad taste in more ways than one.
Moutai owes its intoxicating success to three factors—not all of them easy to emulate. First, it profits from
Chinese nationalism. Moutai is known as the “national liquor”. It was used to raise spirits and disinfect wounds
in Mao’s Long March. It was Premier Zhou Enlai’s favourite tipple, shared with Richard Nixon in 1972. Its
centuries-old craftsmanship—it is distilled eight times and stored for years in earthenware jars—is a source of
national pride. It also claims to be hangover-proof, which would make it an invention to rival gunpowder ...
Second, it chose to serve China’s super-rich rather than its middle class. Markets are littered with the corpses of
firms that could not compete in the cut-throat battle for Chinese middle-class wallets. And the country’s
premium market is massive—at 73m-strong, bigger than the population of France, notes Euan McLeish of
Bernstein, an investment firm, and still less crowded with prestige brands than advanced economies. Moutai is
to these well-heeled drinkers what vintage champagne is to the rest of the world ...
Third, Moutai looks beyond affluent millennials and digital natives. The elderly and the middle-aged, it found,
can be just as lucrative. Its biggest market now is (male) drinkers in their mid-30s. Many have no siblings,
thanks to four decades of China’s one-child policy—which also means their elderly parents can splash out on
weddings and banquets. Moutai is often a guest of honour.
Moutai has succeeded thanks to nationalism, elitism and ageism, in other words—not in spite of this unholy
trinity. But it faces risks. The government is its largest shareholder—and a meddlesome one. It appears to want
prices to remain stable. Exorbitantly priced booze is at odds with its professed socialist ideals. Yet minority
investors—including many foreign funds—lament that Moutai’s wholesale price is a third of what it sells for in
shops. Raising it could boost the company’s profits further. Instead, in what some see as a travesty of
corporate governance, its majority owner has plans to set up its own sales channel ...
In the long run, its biggest risk may be millennials. As they grow older, health concerns, work-life balance and
the desire for more wholesome pursuits than binge-drinking may curb the“Ganbei!” toasting culture [heavy
drinking] on which so much of the demand for Moutai rests. For the time being, though, the party goes on.
The phrase “would make it an invention to rival gunpowder” has been used in the passage in a sense that is
Video Explanation

Which one of the following is both a reason for Moutai’s success as well as a possible threat to that
success?
Video Explanation

In the context of the passage, it is most likely that the author refers to Moutai’s marketing strategy as “the
unholy trinity” because
Video Explanation

In the context of the passage, we can infer that to succeed in the liquor industry in China, a marketing firm
must consider all of the following factors affecting the Chinese liquor market EXCEPT that
Video Explanation

The tone of the passage could best be described as
Video Explanation

We can infer that the author is most likely to agree with which of the following statements?
Video Explanation

The author terms language “the operating system of our civilization” for all the following reasons EXCEPT
that it
Video Explanation

The author identifies all of the following as dire outcomes of the capture of language by AI EXCEPT that it
could
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
Fears of artificial intelligence (AI) have haunted humanity since the very beginning of the computer age.
Hitherto, these fears focused on machines using physical means to kill, enslave or replace people. But over the
past couple of years, new AI tools have emerged that threaten the survival of human civilisation from an
unexpected direction. AI has gained some remarkable abilities to manipulate and generate language, whether
with words, sounds or images. AI has thereby hacked the operating system of our civilisation.
Language is the stuff almost all human culture is made of. Human rights, for example, aren’t inscribed in our
DNA. Rather, they are cultural artefacts we created by telling stories and writing laws. Gods aren’t physical
realities. Rather, they are cultural artefacts we created by inventing myths and writing scriptures….What would
happen once a non-human intelligence becomes better than the average human at telling stories, composing
melodies, drawing images, and writing laws and scriptures? When people think about Chatgpt and other new AI
tools, they are often drawn to examples like schoolchildren using AI to write their essays. What will happen to
the school system when kids do that? But this kind of question misses the big picture. Forget about school
essays. Think of the next American presidential race in 2024, and try to imagine the impact of AI tools that can
be made to mass-produce political content, fake news stories and scriptures for new cults…
Through its mastery of language, AI could even form intimate relationships with people, and use the power of
intimacy to change our opinions and worldviews. Although there is no indication that AI has any consciousness
or feelings of its own, to foster fake intimacy with humans, it is enough if the AI can make them feel emotionally
attached to it….
What will happen to the course of history when AI takes over culture, and begins producing stories, melodies,
laws and religions? Previous tools like the printing press and radio helped spread the cultural ideas of humans,
but they never created new cultural ideas of their own. AI is fundamentally different. AI can create completely
new ideas, completely new culture….Of course, the new power of AI could be used for good purposes as well. I
won’t dwell on this because the people who develop AI talk about it enough….
We can still regulate the new AI tools, but we must act quickly. Whereas nukes cannot invent more powerful
nukes, AI can make exponentially more powerful AI.… Unregulated AI deployments would create social chaos,
which would benefit autocrats and ruin democracies. Democracy is a conversation, and conversations rely on
language. When AI hacks language, it could destroy our ability to have meaningful conversations, thereby
destroying democracy …. And the first regulation I would suggest is to make it mandatory for AI to disclose that
it is an AI. If I am having a conversation with someone, and I cannot tell whether it is a human or an AI—that’s
the end of democracy. This text has been generated by a human. Or has it?
The author identifies all of the following as dire outcomes of the capture of language by AI EXCEPT that it
could
Video Explanation

The author terms language “the operating system of our civilization” for all the following reasons EXCEPT
that it
Video Explanation

We can infer that the author is most likely to agree with which of the following statements?
Video Explanation

The tone of the passage could best be described as
Video Explanation

According to the passage, which of the following scenarios would MOST likely exacerbate the frequency of
carnivore-human conflicts?
Video Explanation

Which of the following statements, if false, would be inconsistent with the concerns raised in the passage
regarding the drivers of carnivore-human conflicts?
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
(. . .) There are three other common drivers for carnivore-human attacks, some of which are more preventable
than others. Natural aggression-based conflicts - such as those involving females protecting their young or
animals protecting a food source - can often be avoided as long as people stay away from those animals and
their food.
Carnivores that recognise humans as a means to get food, are a different story. As they become more reliant on
human food they might find at campsites or in rubbish bins, they become less avoidant of humans. Losing that
instinctive fear response puts them into more situations where they could get into an altercation with a human,
which often results in that bear being put down by humans. “A fed bear is a dead bear,” says Servheen, referring
to a common saying among biologists and conservationists. Predatory or predation-related attacks are quite
rare, only accounting for 17% of attacks in North America since 1955. They occur when a carnivore views a
human as prey and hunts it like it would any other animal it uses for food. (. . .)
Then there are animal attacks provoked by people taking pictures with them or feeding them in natural settings
such as national parks which often end with animals being euthanised out of precaution. “Eventually, that
animal becomes habituated to people, and [then] bad things happen to the animal. And the folks who initially
wanted to make that connection don’t necessarily realise that,” says Christine Wilkinson, a postdoctoral
researcher at UC Berkeley, California, who’s been studying coyote-human conflicts.
After conducting countless postmortems on all types of carnivore-human attacks spanning 75 years,
Penteriani’s team believes 50% could have been avoided if humans reacted differently. A 2017 study coauthored by Penteriani found that engaging in risky behaviour around large carnivores increases the likelihood
of an attack.
Two of the most common risky behaviours are parents leaving their children to play outside unattended and
walking an unleashed dog, according to the study. Wilkinson says 66% of coyote attacks involve a dog.
“[People] end up in a situation where their dog is being chased, or their dog chases a coyote, or maybe they’re
walking their dog near a den that’s marked, and the coyote wants to escort them away,” says Wilkinson.
Experts believe climate change also plays a part in the escalation of human-carnivore conflicts, but the
correlation still needs to be ironed out. “As finite resources become scarcer, carnivores and people are coming
into more frequent contact, which means that more conflict could occur,” says Jen Miller, international
programme specialist for the US Fish & Wildlife Service. For example, she says, there was an uptick in lion
attacks in western India during a drought when lions and people were relying on the same water sources.
(. . .) The likelihood of human-carnivore conflicts appears to be higher in areas of low-income countries
dominated by vast rural landscapes and farmland, according to Penteriani’s research. “There are a lot of
working landscapes in the Global South that are really heterogeneous, that are interspersed with carnivore
habitats, forests and savannahs, which creates a lot more opportunity for these encounters, just statistically,”
says Wilkinson.
According to the passage, what is a significant factor that contributes to the habituation of carnivores to
human presence?
Video Explanation

Which of the following statements, if false, would be inconsistent with the concerns raised in the passage
regarding the drivers of carnivore-human conflicts?
Video Explanation

According to the passage, which of the following scenarios would MOST likely exacerbate the frequency of
carnivore-human conflicts?
Video Explanation

According to the passage, what is a significant factor that contributes to the habituation of carnivores to
human presence?
Video Explanation

If a trader brought white peppercorns from India to medieval Europe, all of the following are unlikely to
happen, EXCEPT:
Video Explanation

In the context of the passage, which one of the following conclusions CANNOT be reached?
Video Explanation

In the context of the passage, the people who heard the story of pepper trees being guarded by snakes
would be least likely to arrive at the conclusion that
Video Explanation

It can be inferred that all of the following contributed to a decline in the allure of spices, EXCEPT:
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
[S]pices were a global commodity centuries before European voyages. There was a complex chain of relations,
yet consumers had little knowledge of producers and vice versa. Desire for spices helped fuel European
colonial empires to create political, military and commercial networks under a single power.
Historians know a fair amount about the supply of spices in Europe during the medieval period - the origins,
methods of transportation, the prices - but less about demand. Why go to such extraordinary efforts to procure
expensive products from exotic lands? Still, demand was great enough to inspire the voyages of Christopher
Columbus and Vasco Da Gama, launching the first fateful wave of European colonialism. . . .
So, why were spices so highly prized in Europe in the centuries from about 1000 to 1500? One widely
disseminated explanation for medieval demand for spices was that they covered the taste of spoiled meat. . . .
Medieval purchasers consumed meat much fresher than what the average city-dweller in the developed world
of today has at hand. However, refrigeration was not available, and some hot spices have been shown to serve
as an anti-bacterial agent. Salting, smoking or drying meat were other means of preservation. Most spices used
in cooking began as medical ingredients, and throughout the Middle Ages spices were used as both medicines
and condiments. Above all, medieval recipes involve the combination of medical and culinary lore in order to
balance food's humeral properties and prevent disease. Most spices were hot and dry and so appropriate in
sauces to counteract the moist and wet properties supposedly possessed by most meat and fish. . . .
Where spices came from was known in a vague sense centuries before the voyages of Columbus. Just how
vague may be judged by looking at medieval world maps . . . To the medieval European imagination, the East
was exotic and alluring. Medieval maps often placed India close to the so-called Earthly Paradise, the Garden of
Eden described in the Bible.
Geographical knowledge has a lot to do with the perceptions of spices’ relative scarcity and the reasons for
their high prices. An example of the varying notions of scarcity is the conflicting information about how pepper
is harvested. As far back as the 7th century Europeans thought that pepper in India grew on trees "guarded" by
serpents that would bite and poison anyone who attempted to gather the fruit. The only way to harvest pepper
was to burn the trees, which would drive the snakes underground. Of course, this bit of lore would explain the
shriveled black peppercorns, but not white, pink or other colors.
Spices never had the enduring allure or power of gold and silver or the commercial potential of new products
such as tobacco, indigo or sugar. But the taste for spices did continue for a while beyond the Middle Ages. As
late as the 17th century, the English and the Dutch were struggling for control of the Spice Islands: Dutch New
Amsterdam, or New York, was exchanged by the British for one of the Moluccan Islands where nutmeg was
grown
It can be inferred that all of the following contributed to a decline in the allure of spices, EXCEPT:
Video Explanation

In the context of the passage, the people who heard the story of pepper trees being guarded by snakes
would be least likely to arrive at the conclusion that
Video Explanation

In the context of the passage, which one of the following conclusions CANNOT be reached?
Video Explanation

If a trader brought white peppercorns from India to medieval Europe, all of the following are unlikely to
happen, EXCEPT:
Video Explanation

According to the passage, some are opposed to making peer reviews public for all the following reasons
EXCEPT that it
Video Explanation

Based on the passage we can infer that the author would most probably support
Video Explanation

All of the following are listed as reasons why academics choose to review other scholars’ work EXCEPT:
Video Explanation

According to the passage, which of the following is the only reason NOT given in favour of making peer
review data public?
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
The job of a peer reviewer is thankless. Collectively, academics spend around 70 million hours every year
evaluating each other’s manuscripts on the behalf of scholarly journals — and they usually receive no monetary
compensation and little if any recognition for their effort. Some do it as a way to keep abreast with
developments in their field; some simply see it as a duty to the discipline. Either way, academic publishing
would likely crumble without them.
In recent years, some scientists have begun posting their reviews online, mainly to claim credit for their work.
Sites like Publons allow researchers to either share entire referee reports or simply list the journals for whom
they’ve carried out a review…. The rise of Publons suggests that academics are increasingly placing value on
the work of peer review and asking others, such as grant funders, to do the same. While that’s vital in the
publish-or-perish culture of academia, there’s also immense value in the data underlying peer review. Sharing
peer review data could help journals stamp out fraud, inefficiency, and systemic bias in academic publishing.….
Peer review data could also help root out bias. Last year, a study based on peer review data for nearly 24,000
submissions to the biomedical journal eLife found that women and non- Westerners were vastly
underrepresented among peer reviewers. Only around one in every five reviewers was female, and less than two
percent of reviewers were based in developing countries…. Openly publishing peer review data could perhaps
also help journals address another problem in academic publishing: fraudulent peer reviews. For instance, a
minority of authors have been known to use phony email addresses to pose as an outside expert and review
their own manuscripts.…
Opponents of open peer review commonly argue that confidentiality is vital to the integrity of the review
process; referees may be less critical of manuscripts if their reports are published, especially if they are
revealing their identities by signing them. Some also hold concerns that open reviewing may deter referees
from agreeing to judge manuscripts in the first place, or that they’ll take longer to do so out of fear of scrutiny….
Even when the content of reviews and the identity of reviewers can’t be shared publicly, perhaps journals could
share the data with outside researchers for study. Or they could release other figures that wouldn’t compromise
the anonymity of reviews but that might answer important questions about how long the reviewing process
takes, how many researchers editors have to reach out to on average to find one who will carry out the work,
and the geographic distribution of peer reviewers.
Of course, opening up data underlying the reviewing process will not fix peer review entirely, and there may be
instances in which there are valid reasons to keep the content of peer reviews hidden and the identity of the
referees confidential. But the norm should shift from opacity in all cases to opacity only when necessary.
According to the passage, which of the following is the only reason NOT given in favour of making peer
review data public?
Video Explanation

All of the following are listed as reasons why academics choose to review other scholars’ work EXCEPT:
Video Explanation

Based on the passage we can infer that the author would most probably support
Video Explanation

According to the passage, some are opposed to making peer reviews public for all the following reasons
EXCEPT that it
Video Explanation

We can assume that the author would support all of the following views EXCEPT:
Video Explanation

Carrier, Babbage, and Edison are mentioned in the passage to illustrate the author’s point that
Video Explanation

Which of the following best conveys the main point of the first paragraph?
Video Explanation

The passage below is accompanied by four questions. Based on the passage, choose the best answer for
each question.
The history of any major technological or industrial advance is inevitably shadowed by a less predictable history
of unintended consequences and secondary effects — what economists sometimes call “externalities.”
Sometimes those consequences are innocuous ones, or even beneficial. Gutenberg invents the printing press,
and literacy rates rise, which causes a significant part of the reading public to require spectacles for the first
time, which creates a surge of investment in lens-making across Europe, which leads to the invention of the
telescope and the microscope.
Oftentimes the secondary effects seem to belong to an entirely different sphere of society. When Willis Carrier
hit upon the idea of air-conditioning, the technology was primarily intended for industrial use: ensuring cool, dry
air for factories that required low-humidity environments. But…it touched off one of the largest migrations in the
history of the United States, enabling the rise of metropolitan areas like Phoenix and Las Vegas that barely
existed when Carrier first started tinkering with the idea in the early 1900s.
Sometimes the unintended consequence comes about when consumers use an invention in a surprising way.
Edison famously thought his phonograph, which he sometimes called “the talking machine,” would primarily be
used to take dictation….But then later innovators… discovered a much larger audience willing to pay for musical
recordings made on descendants of Edison’s original invention. In other cases, the original innovation comes
into the world disguised as a plaything…the way the animatronic dolls of the mid-1700s inspired Jacquard to
invent the first “programmable” loom and Charles Babbage to invent the first machine that fit the modern
definition of a computer, setting the stage for the revolution in programmable technology that would transform
the 21st century in countless ways.
We live under the gathering storm of modern history’s most momentous unintended consequence….carbonbased climate change. Imagine the vast sweep of inventors whose ideas started the Industrial Revolution, all
the entrepreneurs and scientists and hobbyists who had a hand in bringing it about. Line up a thousand of them
and ask them all what they had been hoping to do with their work. Not one would say that their intent had been
to deposit enough carbon in the atmosphere to create a greenhouse effect that trapped heat at the surface of
the planet. And yet here we are.
Ethyl (leaded fuel) and Freon belonged to the same general class of secondary effect: innovations whose
unintended consequences stem from some kind of waste by-product that they emit. But the potential health
threats of Ethyl (unleaded fuel) were visible in the 1920s, unlike, say, the long-term effects of atmospheric
carbon build up in the early days of the Industrial Revolution….
Indeed, it is reasonable to see CFCs (chlorofluorocarbons) as a forerunner of the kind of threat we will most
likely face in the coming decades, as it becomes increasingly possible for individuals or small groups to create
new scientific advances — through chemistry or biotechnology or materials science — setting off unintended
consequences that reverberate on a global scale
The author lists all of the following examples as “externalities” of major technical advances EXCEPT:
Video Explanation

Which of the following best conveys the main point of the first paragraph?
Video Explanation

Carrier, Babbage, and Edison are mentioned in the passage to illustrate the author’s point that
Video Explanation

We can assume that the author would support all of the following views EXCEPT:
Video Explanation

The author lists all of the following examples as “externalities” of major technical advances EXCEPT:
Video Explanation

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