Tires may be either underinflated, overinflated, or neither. We are pretty safe in assuming that underinflation or overinflation of tires harms their tread. After all, no one has been able to show that these do not harm tire tread.

Summarize Argument
The argument concludes that it’s safe to assume that either underinflating or overinflating tires damages the tires. Why? Because no one has proven that underinflation or overinflation don’t damage tires.

Identify and Describe Flaw
This is a “lack of support vs. false conclusion” flaw, where a position is taken to be false just because no one has proved that it’s true. Specifically, the argument rejects the possibility that underinflation and overinflation are harmless, just because that possibility hasn’t been proven.

A
The argument assumes what it is attempting to demonstrate.
The argument does not assume that underinflation and overinflation damage tires. There is support offered, even if that support is weak.
B
The argument overlooks that what is not in principle susceptible to proof might be false.
There isn’t anything in the argument that’s “not susceptible to proof”. No one is claiming that it’s impossible to prove whether underinflation and overinflation are harmless to tires, just that it hasn’t been proven yet.
C
The argument fails to specify how it is that underinflation or overinflation harms tire tread.
The mechanism of how tire tread might be harmed isn’t relevant to the question of whether it’s safe to assume that the tire tread will be harmed, just because no one has proven that it won’t be harmed.
D
The argument rejects the possibility that what has not been proven is nevertheless true.
The argument rejects the possibility that it might be true that underinflation and overinflation don’t damage tires, even though it hasn’t been proven. This possibility undermines the idea that it’s “safe to assume” that the tires will be damaged.
E
The argument fails to precisely define the terms “underinflation” and “overinflation.”
The exact definition of what counts as an underinflated or overinflated tire is irrelevant to whether or not those conditions are likely to damage tires, based on the fact that they haven’t been proven not to damage tires.

36 comments

Economist: In free market systems, the primary responsibility of corporate executives is to determine a nation’s industrial technology, the pattern of work organization, location of industry, and resource allocation. They also are the decision makers, though subject to significant consumer control, on what is to be produced and in what quantities. In short, a large category of major decisions is turned over to business executives. Thus, business executives have become public officials.

Summarize Argument

The economist concludes that business executives have become public officials. She supports this by saying that business executives are responsible for key decisions like industrial technology, work organization, industry location, and resource allocation. They also decide what and how much to produce, although consumers have some influence.

Notable Assumptions

In order for business executives to be considered public officials, the economist must assume that the “large category of major decisions” that they are responsible for is sufficient for making someone a public official. In other words, she must assume that, just because business executives make these decisions, they are public officials.

A
Most of the decisions made by business executives in free market systems are made by the government in countries with centrally planned economies.

The economist’s argument only addresses business executives in free market systems. So the decision-making in countries with centrally planned economies is not relevant.

B
Making decisions about patterns of work organization, resource allocation, and location of industry is not the core of a public official’s job.

This weakens the economist’s argument by pointing out her key assumption. She assumes that making the decisions mentioned is a sufficient reason to call someone a public official. But if these decisions aren’t the core of a public official’s job, her argument falls apart.

C
The salaries of business executives are commensurate with the salaries of high-ranking public officials.

It doesn’t matter that business executives and high-ranking public officials have similar salaries. We’re only concerned with the decisions made by business executives and whether those decisions make them public officials.

D
What a country produces and in what quantities is not always completely controlled by corporate executives.

We already know that decisions about a country’s production, though made by business executives, are “subject to significant consumer control.” The question is whether making decisions about these things means that business executives are public officials.

E
Public officials and business executives often cooperate in making decisions of national importance.

Whether public officials and business executives work together in making decisions is irrelevant. We need to know if making these decisions is enough reason to say that business executives are public officials.


12 comments

Annie: Our university libraries have been sadly neglected. Few new books have been purchased during the last decade, and most of the older books are damaged. The university’s administrators should admit that their library policies have been in error and should remedy this situation in the fastest way possible, which is to charge students a library fee and use the funds for library improvements.

Matilda: The current poor condition of the university libraries is the fault of the library officials, not the students. Students should not have to pay for the mistakes of careless library administrators.

Speaker 1 Summary
Annie concludes that the university’s administrators should admit that their policies have been in error, should charge students a library fee, and should use the funds for library improvements. This is based on the fact that there have been few books purchased in the last decade, most older books are damaged, and charging students a fee is the fastest way possible to address these problems.

Speaker 2 Summary
Matilda concludes that students should not have to pay a library fee. This is because the problems with the library are the fault of library officials.

Objective
We’re looking for a disagreement. The speakers disagree about whether students should be charged a fee to improve the library.

A
library administrators are to blame for the poor condition of the university libraries
Not a point of disagreement. Annie blames university administrators, who are reasonably considered the same as the library officials Matilda blames. Even if they’re not, Annie might still blame both library officials and university administrators.
B
library improvements could be most quickly effected through charging students additional fees
Matilda expresses no opinion. She might agree with Annie that a student fee is the fastest way to improve the library.
C
students will ultimately benefit from the library improvements that could be funded by additional student fees
Matilda expresses no opinion. She doesn’t suggest any opinion about the results of student fees or of library improvements. In addition, it’s reasonable to think Matilda agrees that library improvements would help users of the library, such as students.
D
those not responsible for the current condition of the libraries should bear the cost for remedying it
This is a point of disagreement. Matilda thinks students should not be responsible for improvements. Annie believes students should be charged a fee for library improvements. She doesn’t explicitly say students aren’t responsible, but she blames administrators’ policies.
E
funds for library improvements could be raised without additional student fees
Not a point of disagreement. Matilda doesn’t discuss whether the university can get funds without a student fee.

3 comments

Curator: The decision to restore the cloak of the central figure in Veronese’s painting from its present red to the green found underneath is fully justified. Reliable x-ray and chemical tests show that the red pigment was applied after the painting had been completed, and that the red paint was not mixed in Veronese’s workshop. Hence it appears likely that an artist other than Veronese tampered with Veronese’s painting after its completion.

Art critic: But in a copy of Veronese’s painting made shortly after Veronese died, the cloak is red. It is highly unlikely that a copyist would have made so major a change so soon after Veronese’s death.

Summary

When responding to the claim that an artist other than Veronese tampered with Veronese’s painting after its completion, the art critic offers evidence that the cloak of the central figure was actually red in a copy made shortly after Veronese’s death. Furthermore, it’s highly unlikely that this change was made so soon after Veronese’s death.

Strongly Supported Conclusions

The restoration of Veronese’s painting will fail to restore it to the appearance it had before Veronese’s death.

A
The copy of Veronese’s painting that was made soon after the painter’s death is indistinguishable from the original.

This answer is unsupported. We don’t know from the stimulus whether the copied version is indistinguishable from the original. We only know about the change in the cloak color.

B
No painting should be restored before the painting is tested with technologically sophisticated equipment.

This answer is unsupported. We don’t know from the stimulus whether the art critic believes testing the painting is necessary in order for the painting to be restored.

C
The proposed restoration will fail to restore Veronese’s painting to the appearance it had at the end of the artist’s lifetime.

This answer is strongly supported. The art critic claims that it is unlikely for the a copyist to change the cloak color so soon after Veronese’s death and that the cloak the copyist replicated was likely red to begin with.

D
The value of an artist’s work is not necessarily compromised when that work is tampered with by later artists.

This answer is unsupported. We don’t know from the stimulus how valuable Veronese’s artwork is.

E
Veronese did not originally intend the central figure’s cloak to be green.

This answer is unsupported. We don’t know anything about Veronese’s intentions from the stimulus. The stimulus discusses the cloak color on a factual basis, what color it is versus isn’t.


56 comments