Monica: The sculpture commissioned for our town plaza has been scorned by the public ever since it went up. But since the people in our town do not know very much about contemporary art, the unpopularity of the work says nothing about its artistic merit and thus gives no reason for removing it.

Hector: You may be right about what the sculpture’s popularity means about its artistic merit. However, a work of art that was commissioned for a public space ought to benefit the public, and popular opinion is ultimately the only way of determining what the public feels is to its benefit. Thus, if public opinion of this sculpture is what you say, then it certainly ought to be removed.

Speaker 1 Summary

Monica believes that the sculpture’s lack of popularity isn’t a good reason to remove the sculpture. Why not? Because the public is ignorant about contemporary art, and so lack of popularity tells us nothing about its artistic merit. For Monica, any reason to remove the sculpture must be related to its artistic merit.

Speaker 2 Summary

Hector disagrees; he says that if people don’t like the sculpture, then it should be removed. Why? Because the sculpture should benefit the public, and popular opinion is the only way to know whether people think the sculpture benefits them.

Objective

We need a principle that Monica and Hector disagree on. They disagree about the rationale for removing a sculpture. Monica thinks it’s necessary to consider artistic merit. Hector thinks artistic merit doesn’t matter if the public believes the sculpture is of no benefit.

A
Public opinion of a work of art is an important consideration in determining the work’s artistic merit.

Monica’s opinion is unclear. She disregards public opinion in this case because the townspeople are ignorant about contemporary art, but she doesn’t suggest that public opinion never matters. Meanwhile, Hector says she may be right, so he doesn’t disagree with her.

B
Works of art commissioned for public spaces ought at least to have sufficient artistic merit to benefit the public.

Neither has an opinion. Monica never considers public benefit, and Hector doesn’t draw any connection between artistic merit and public benefit.

C
The only reason for removing a work of art commissioned for a public space would be that the balance of public opinion is against the work.

Hector’s opinion is unclear. He believes that this is a sufficient reason for removing a work of art, but he doesn’t suggest that it’s the only reason.

D
The sculpture cannot benefit the public by remaining in the town plaza unless the sculpture has artistic merit.

Neither has an opinion. Monica never considers public benefit, and Hector doesn’t draw any connection between artistic merit and public benefit.

E
In determining whether the sculpture should remain in the town plaza, the artistic merit of the sculpture should be a central consideration.

Monica agrees, Hector disagrees. Monica suggests that artistic merit is key—if there’s not an issue with the sculpture’s merit, there’s no reason to remove it. Hector says that poor public opinion is enough reason to remove the statue, regardless of artistic merit.


23 comments

Each child in a group of young children read aloud both a short paragraph and a list of randomly ordered words from the paragraph. The more experienced readers among them made fewer pronunciation errors in whichever task they performed second, whether it was the list or the paragraph. The order in which the two tasks were performed, however, had no effect on the performance of beginning readers, who always made fewer pronunciation errors when reading the paragraph than when reading the list.

"Surprising" Phenomenon
Children read aloud a short paragraph and a list of random words from the paragraph. More experienced readers made fewer pronunciation mistakes with whatever they read second, whether it was the paragraph or the list. Less experienced readers made fewer pronunciation mistakes with the paragraph than with the list. What explains the difference in mistake tendency?

Objective
Th correct answer should differentiate more experienced readers from less experienced readers in a way that would lead more experienced readers to make fewer mistakes with the second task and less experienced readers to make fewer mistakes with the paragraph.

A
Because several words were used more than once in the paragraph but only once in the list, the list was shorter than the paragraph.
This doesn’t differentiate more experienced from less experienced readers.
B
In reading the paragraph, the more experienced readers were better at using context to guess at difficult words than were the beginning readers.
This would lead more experienced readers to perform better on the paragraph, which contains context. But the more experienced readers performed better on the task performed second, even if it was the list of words.
C
The more experienced readers sounded out difficult words, while the beginning readers relied solely on context to guess at difficult words.
Since the paragraph contains context, this helps explain why less experienced readers performed better on the paragraph. And since more experienced readers sounded out difficult words, they might perform better the second time they’ve seen those difficult words.
D
Both tasks used the same words, so that the words the children read in whichever task was performed first would be recognized in the second task.
This doesn’t differentiate more experienced readers from less experienced readers.
E
The beginning readers made more pronunciation errors than the more experienced readers did in reading both the paragraph and the list.
This doesn’t explain why the less experienced readers performed better on the paragraph than on the list, or why the more experienced readers performed better on the second task.

36 comments

Commercial passenger airplanes can be equipped with a collision-avoidance radar system that provides pilots with information about the proximity of other airplanes. Because the system warns pilots to take evasive action when it indicates a possible collision, passengers are safer on airplanes equipped with the system than on comparable airplanes not so equipped, even though the system frequently warns pilots to evade phantom airplanes.

Summarize Argument
The author concludes passengers are safer on airplanes equipped with collision-avoidance radar. This is because the radar warns pilots when to take evasive action.

Notable Assumptions
The author assumes that pilots evading phantom planes doesn’t put passengers at more risk than usual. This means the author believes this happens rarely enough to not matter, or that swerving to avoid a phantom plane carries no safety risks.

A
Evasive action taken in response to the system’s warnings poses no risk to the passengers.
Evading phantom planes poses no safety risk to passengers. Thus, the radar is entirely beneficial.
B
Commercial passenger airplanes are in greater danger of colliding with other airplanes while on the ground than they are while in flight.
Irrelevant. The radar still helps them avoid collisions while in flight.
C
Commercial passenger airplanes are rarely involved in collisions while in flight.
Like (B), irrelevant. The radar still helps them avoid collisions while in flight.
D
A study by ground-based air traffic controllers found that 63 percent of the warnings by the system were invalid.
We need to know if those invalid warnings pose safety risks to passengers. This doesn’t tell us.
E
The collision-avoidance radar system is run by a computerized device on the plane that scans the sky and calculates the distances between planes.
This explains the mechanism behind the radar. We care about how the radar effects passenger safety.

28 comments

Early pencil leads were made of solid graphite mined in Cumberland, in Britain. Modern methods of manufacturing pencil leads from powdered graphite are the result of research sponsored by the government of France in the 1790s, when France was at war with Britain and thus had no access to Cumberland graphite.

Summary
Early pencil leads were made from solid graphite mined in Cumberland, in Britain. Modern pencil leads are manufactured from powdered graphite. Powdered graphite was made possible from research sponsored by the French government in the 1790’s. During that time period, France was at war with Britain and had no access to solid graphite from Cumberland.

Strongly Supported Conclusions
In the 1790’s, France was unaware of any other source of solid graphite the country could use to manufacture pencil lead.

A
The world’s only deposit of graphite suitable for manufacture of pencils is in Cumberland, in Britain.
This answer is unsupported. To say that solid graphite for pencil lead is “only” found in Cumberland is too strong. We only know from the stimulus that early pencil leads were manufactured from this source of graphite.
B
In the 1790s, France’s government did not know of any accessible source of solid graphite appropriate to meet France’s need for pencils.
This answer is strongly supported. France did not have access to the graphite mined in Cumberland due to the war with Britain. Therefore, they sponsored research to develop powdered graphite because they must not have been aware of any other accessible source of solid graphite.
C
One of the causes of war between France and Britain in the 1790s was the British government’s attempt to limit the amount of Cumberland graphite being exported to France.
This answer is unsupported. We don’t know anything about what caused the war between France and Britain from the stimulus.
D
Government-sponsored research frequently gives rise to inventions that are of great benefit to society.
This answer is unsupported. To say that this research “frequently” results in inventions is too strong. We only know of one example, powered graphite, from the stimulus.
E
Even today, all pencil leads contain Cumberland graphite.
This answer is unsupported. We don’t know anything about what modern pencil leads contain from the stimulus. We only know that modern methods of manufacturing involve powered graphite.

61 comments