Professor: The most important function of epic poetry is to transmit the values by which a group of people is to live. This transmission is accomplished not by an explicit discussion of those values, but rather by their embodiment in heroic figures, who are presented as role models. Imitating those role models gives meaning and direction to the lives of those who hear the poems.

Summary

Epic poetry’s most important function is the transmission of the values by which a group of people is to live.

In epic poetry, values are not transmitted by explicit discussion.

In epic poetry, values are transmitted by their embodiment in heroic figures, who are presented as role models.

If people imitate the role models in epic poems, such people gain meaning and direction in their lives.

Notable Valid Inferences

Epic poetry accomplishes its most important function by embodying values in heroic figures, who are presented as role models.

A
An important function of poetry is to give meaning and direction to the lives of those who hear or read it.

Could be false. The stimulus only discusses one important function of poetry: the transmission of values. This might lead to people gaining life meaning and direction if they do decide to imitate the characters, but that’s not the explicit function as the stimulus describes it.

B
Epic poems accomplish their most important function by presenting heroic figures as role models.

Must be true. The stimulus explicitly states that the most important function of epic poems is to transmit values, and that the poems do so by presenting heroic figures as role models.

C
When values are represented in poetry, they are rarely if ever set forth explicitly.

Could be false. We know that epic poems do not transmit values via explicit discussion, but it’s possible that other kinds of poems do!

D
For many groups of people, heroic figures serve as role models embodying the values by which those people are to live.

Could be false. The stimulus does not say that many groups of people view heroic figures as role models; rather, it says that if a person does see a heroic figure as a role model and imitates that figure, that person could gain meaning and direction in their life.

E
Only epic poetry presents heroic figures as role models that, if imitated, give meaning and direction to the lives of those who hear it.

Could be false. The stimulus only discusses epic poetry. It does not claim that other kinds of poetry or art do not utilize the same techniques described here.


42 comments

Consultant: The dramatic improvements in productivity achieved during the Industrial Revolution resulted in large part from standardization of processes and procedures coupled with centralization of planning and decision making. Yet, in recent years, many already productive companies have further improved their productivity by giving individual employees greater influence in decision making and in how they do their work.

"Surprising" Phenomenon

How have many already productive companies further improved their productivity by implementing less centralized planning and decisionmaking, even though more centralization has been known to lead to huge increases in productivity?

Objective

The correct answer should suggest a difference between the already productive companies and the average company that could explain why the already productive companies can increase their productivity more through less centralization.

A
Most companies still try to improve productivity mainly through greater standardization and centralization of decision making.

What most companies do doesn’t explain why the already productive companies we’re concerned with in the stimulus can increase productivity through less centralization.

B
Increased productivity is not the only benefit of giving individual employees greater control over their work; job satisfaction increases as well.

This might provide another reason companies may want less centralization, but doesn’t help explain how companies can become more productive through les centralization.

C
Most of the increases in industrial productivity that have occurred in recent years have been due to the introduction of advanced technology like industrial robots.

Even if most increase in productivity has occurred through technology, we still know some companies have increased productivity through less centralization. This answer doesn’t explain how this happened.

D
The innovations of the Industrial Revolution are only now being applied in those companies in which individual employees have traditionally been entirely in control of how they do their work.

This answer tells us what’s happening in companies in which individual employees already have complete individual control. This doesn’t relate to the already productive companies we’re concerned with in the stimulus, which are giving their employees more and more control.

E
Increases in productivity in highly productive companies depend on management’s broad application of innovative ideas solicited from individual employees about their work.

Once a company is already highly productive, further productivity comes from individual employees’ ideas. This could be why less centralization (and greater autonomy for employees) is how already productive companies become more productive.


25 comments

Though Earth’s human population is increasing, it currently uses only a relatively small fraction of the supply of fresh water. Thus, claims that water shortages will plague humankind in the near future unless population growth trends change are simply mistaken.

Summarize Argument
The author concludes that humankind won’t encounter water shortages in the near future. This is because the human population currently uses only a small portion of the fresh water supply.

Notable Assumptions
The author assumes that water shortages are caused exclusively by using too much of the total fresh water supply. This means the author believes that supply is the same everywhere, rather than that certain areas have more available fresh water than others. He also assumes that humans in the near future won’t need to use significantly more of the available fresh water than they do now.

A
Population growth trends are notoriously hard to predict with reasonable accuracy.
The author says that population growth trends really don’t matter. There’s more than enough fresh water to sustain the human population.
B
The amount of fresh water available to meet the needs of Earth’s population varies significantly from region to region.
Not everyone has equal access to fresh water. Population growth in certain regions with little fresh water might indeed cause water shortages if there’s only limited water to go around.
C
Not all of Earth’s population will adopt water conservation methods in the near future.
The author never says people are currently practicing water conservation methods. Thus, we don’t care whether or not they’ll eventually adopt those methods.
D
If Earth’s population continues to increase, it will eventually outstrip all available resources.
We’re talking about the “near future.” This is evidently referring to a much longer time frame.
E
The percentage of fresh water used for agriculture is likely to grow more quickly than is the percentage used for industry.
We have no idea what the relative percentages of agriculture and industry water use are currently. Besides, the author says we have plenty of fresh water as it is. We can’t assume growth in agriculture water use will deplete the fresh water supply.

67 comments

A science class stored one selection of various fruits at 30 degrees Celsius, a similar selection in similar conditions at 20 degrees, and another similar selection in similar conditions at 10 degrees. Because the fruits stored at 20 degrees stayed fresh longer than those stored at 30 degrees, and those stored at 10 degrees stayed fresh longest, the class concluded that the cooler the temperature at which these varieties of fruits are stored, the longer they will stay fresh.

Summarize Argument

The class concludes that the colder the storage conditions for these fruits, the longer they will stay fresh. They support this with an experiment in which similar fruits were stored at 30, 20, and 10 degrees in similar conditions. The fruits at 20 degrees lasted longer than those at 30 degrees, and the ones at 10 degrees stayed fresh the longest.

Identify and Describe Flaw

The class’s reasoning is flawed because they draw a broad conclusion based on a small range of temperatures (10-30 degrees). They assume that colder storage always keeps the fruits fresh for longer, ignoring the possibility that there could be temperatures that are too cold. In other words, just because the fruits lasted longer at 10 degrees than at 30 doesn’t mean they’ll last longer at 0 degrees.

A
generalized too readily from the fruits it tested to fruits it did not test

This is the cookie-cutter flaw of hasty generalization. The class doesn't make a generalization about fruits that they did not test. Instead, they draw a conclusion about “these varieties of fruits,” meaning the fruits that they did test.

B
ignored the effects of other factors such as humidity and sunlight on the rate of spoilage

The class doesn’t mention other factors, but it doesn’t need to because the experiment controlled for them. By keeping the other conditions similar for each selection of fruits, the class tested the effect of temperature.

C
too readily extrapolated from a narrow range of temperatures to the entire range of temperatures

The experiment showed that within the narrow range of 10-30 degrees, colder storage keeps the fruits fresh longer. They then apply this to all temperatures, assuming that colder storage always works, without considering that some temperatures might be too cold.

D
assumed without proof that its thermometer was reliable

The class never mentions a thermometer at all. Even if they did, we have no reason to believe that the thermometer might be unreliable. The flaw in the class’s argument has to do with how they apply their experiment’s findings, not with their thermometer.

E
neglected to offer any explanation for the results it discovered

The class concludes that colder storage helps the fruits last longer; they don't need to explain why. Even if they did explain why, this wouldn’t fix the fact that they apply their results too broadly.


8 comments

If grain prices double then the average price of a loaf of bread will rise between 10 and 15 percent, whereas the price of grain-fed beef will come close to doubling.

"Surprising" Phenomenon
If grain prices double, why would the average price of a loaf of bread rise only 10 to 15 percent, even though the price of grain-fed beef would almost double?

Objective
The correct answer will suggest a difference between grain-fed beef and a loaf of bread that could make changes in grain price have less of an effect on the price of a loaf of bread than on the price of grain-fed beef.

A
Farmers engaged in very large-scale cattle production generally try to reduce the labor costs involved in the production and sale of beef.
The labor costs involved in beef don’t have a clear relationship to grain prices. We wouldn’t expect reduced labor costs to change the impact of grain prices on the price of grain-fed beef. In any case, we want to explain the strangely low impact grain price has on bread price.
B
The wholesale price per pound of beef is approximately ten times the wholesale price per pound of bread.
The price of beef compared to the price of bread is irrelevant, because we’re trying to explain the disparity in percentage change in price. Why, if grain price doubles, does bread price only increase 10 to 15% when beef price almost doubles?
C
The labor and marketing costs in producing and selling bread represent most of its cost, but the cost of feeding cattle represents most of the cost of producing beef.
Most of the cost of bread isn’t related to grain. But most of the cost of grain-fed beef is related to grain. This could explain why bread price is less affected by changes in grain price.
D
Only an insignificantly small proportion of the beef sold in retail markets is produced from cattle fed on grass rather than grain.
The comparison in the stimulus involves price changes in bread and grain-fed beef. The fact grain-fed beef isn’t very common compared to other beef doesn’t impact this comparison.
E
The vast majority of retail grocery outlets purchase the bread they sell from small independent bakers but purchase the meat they sell from large wholesale processing operations.
Do we have any reason to think being sourced by an independent baker vs. a large wholesale processing operation would impact the degree to which changes in grain price would affect bread or beef price? No.

8 comments

CEO: We have been falsely criticized for not being an environmentally responsible corporation. Environmentally responsible corporations are corporations that do all they can to pollute less. Our current production methods pollute significantly less than our old methods did, and there currently are no methods that do not produce any pollution.

Summarize Argument
The CEO concludes the corporation has been falsely criticized for not being environmentally responsible. She supports this with the following premises:

(1) Environmentally responsible corporations do all they can to pollute less.

(2) The corporation’s new production methods pollute less than the old ones.

(3) No methods exist that produce no pollution at all.

Identify and Describe Flaw
The CEO assumes that the corporation is doing all that it can to pollute less. But just because their new methods are better than their old ones, doesn’t necessarily mean that the corporation is doing all that it can. What if there are other methods that would allow it to pollute even less than it does now? In that case, the corporation isn’t doing all that it can and so it isn’t environmentally responsible.

A
takes for granted that production methods that do not produce pollution cannot be developed
It doesn't matter whether production methods that do not produce pollution can be developed in the future. Because there are currently no methods that do not produce pollution, the corporation might be doing all that it can now, even if better methods are developed later.
B
fails to take into account the possibility that different causes can have similar effects
The CEO’s argument doesn't rely on causal reasoning. Instead, the CEO assumes that her corporation is doing all it can to reduce pollution.
C
generalizes too hastily from the inapplicability of a specific criticism to the inapplicability of a class of criticisms
The CEO only addresses the specific criticism that her corporation is not environmentally responsible. She argues that this criticism is false, but never generalizes about any other criticisms.
D
takes for granted that because the company has attempted to reduce the amount of pollution produced, they must have succeeded
The CEO doesn’t assume that the corporation has succeeded in reducing the amount of pollution it produces, she explicitly states that it has. She says, “Our current production methods pollute significantly less than our old methods did.” So the corporation did succeed.
E
ignores the possibility that there are currently production methods that would allow the corporation to produce less pollution than it does now
To be environmentally responsible, the corporation must be doing all that it can to pollute less. If there are production methods that would allow the corporation to produce less pollution than it does now, then it isn’t doing all it can and it isn’t environmentally responsible.

12 comments

Depression is a serious problem for residents of nursing homes. However, a recent study has found that residents who developed personal bonds with pets had significantly lower rates of depression than did residents who did not develop personal bonds with pets.

Summary

Depression is a serious problem in nursing homes. However, a recent study found that residents who formed bonds with pets had much lower rates of depression than those who didn't.

Strongly Supported Conclusions

Encouraging nursing home residents to have pets could potentially help to lower the rate of depression in nursing homes.

Depression in nursing homes might in part stem from residents’ lack of companionship.

A
Nursing-home residents are more subject to depression than any other individuals.

Unsupported. The stimulus tells us that depression is a serious problem for residents of nursing homes. However, it does not compare rates of depression among nursing home residents to rates of depression among anyone else.

B
The best method for helping a nursing-home resident to overcome depression is to provide access to a pet.

Unsupported. Although forming bonds with pets significantly lowers rates of depression among nursing home residents, we do not know that this is the best way for residents to overcome depression.

C
High rates of depression among nursing-home residents may result at least in part from a lack of companionship.

Strongly supported. Residents who formed bonds with pets had much lower rates of depression than those who didn’t, and bonds with pets are a kind of companionship. So, rates of depression may result in part from a lack of companionship.

D
Animal companionship is essential for psychological well-being.

Unsupported. We do not know that animal companionship is essential for psychological well-being simply because animal companionship could help alleviate depression in some circumstances.

E
Allowing free access to pets in nursing homes would eliminate problems relating to depression.

Unsupported. Allowing free access to pets could alleviate rates of depression in nursing homes, but we have no way to know whether it would entirely eliminate all problems relating to depression.


5 comments