Environmentalist: The excessive atmospheric buildup of carbon dioxide, which threatens the welfare of everyone in the world, can be stopped only by reducing the burning of fossil fuels. Any country imposing the strict emission standards on the industrial burning of such fuels that this reduction requires, however, would thereby reduce its gross national product. No nation will be willing to bear singlehandedly the costs of an action that will benefit everyone. It is obvious, then, that the catastrophic consequences of excessive atmospheric carbon dioxide are unavoidable unless _______.

Summary

According to the environmentalist, excessive atmospheric carbon dioxide threatens everyone’s welfare, and can only be stopped by reducing fossil fuel use. However, any country that participated in this reduction would also reduce its GNP. Also, no country would willingly take on the entire cost of an action that helps everyone. Thus, the threat of excess atmospheric carbon can only be avoided if... what?

In Lawgic:

P1: stop carbon excess → reduce fossil fuels

P2: reduce fossil fuels → reduce GNP

P3: country → /willing to bear entire cost

C: stop carbon excess → ?

Strongly Supported Conclusions

From the stimulus, we can conclude that avoiding the threat of excess atmospheric carbon dioxide can only be avoided if multiple countries work together to share the burden of reducing fossil fuel use.

A
all nations become less concerned with pollution than with the economic burdens of preventing it

This is anti-supported. The whole problem for the environmentalist is that each individual country is too concerned with economics, and not concerned enough with pollution. Shifting the balance further towards economics definitely wouldn’t avoid the carbon crisis.

B
multinational corporations agree to voluntary strict emission standards

This is not supported. The environmentalist doesn’t indicate the role of multinational corporations at all, and talks about strict government regulation rather than voluntary emission standards.

C
international agreements produce industrial emission standards

This is strongly supported. The environmentalist’s argument is that countries aren’t willing to work alone to impose industrial emission standards. International agreements would share the economic burden, thus allowing a solution through participation.

D
distrust among nations is eliminated

This is not supported. The environmentalist doesn’t suggest anything about distrust among nations. It may be tempting to assume that distrust is the obstacle, but we just don’t have enough information about nations’ intentions and their leaders’ beliefs.

E
a world government is established

This is not supported. The environmentalist is leading to the conclusion that some kind of international participation is necessary, but world government is an extreme way to do so, and it’s not an option suggested in the stimulus. This just goes too far.


21 comments

A clear advantage of digital technology over traditional printing is that digital documents, being patterns of electronic signals rather than patterns of ink on paper, do not generate waste in the course of their production and use. However, because patterns of electronic signals are necessarily ephemeral, a digital document can easily be destroyed and lost forever.

Summary
Digital technology has an advantage over traditional printing because digital documents do not generate waste during their production and use. However, because digital documents are patterns of electronic signals, a digital document could easily be destroyed and lost forever.

Strongly Supported Conclusions
A characteristic that is advantageous in one circumstance may nonetheless be disadvantageous in a different circumstance.

A
A property of a technology may constitute an advantage in one set of circumstances and a disadvantage in others.
Digital technology has simultaneously an advantage and disadvantage. It is advantageous in that it does not produce waste, but disadvantageous in that it is more susceptible to being destroyed and lost forever.
B
What at first appears to be an advantage of a technology may create more problems than it solves.
We don’t know whether digital technology creates more problems than it solves.
C
It is more important to be able to preserve information than it is for information to be easily accessible.
We don’t know whether preserving information is a more important consideration than accessibility.
D
Innovations in document storage technologies sometimes decrease, but never eliminate, the risk of destroying documents.
We don’t know whether innovations in document storage technologies ever decrease the risk of destroying documents. We only know that there is some amount of risk present.
E
Advances in technology can lead to increases in both convenience and environmental soundness.
We don’t know whether technological advances can lead to increases in convenience. The only advantage the stimulus provides for digital technology is that it does not generate waste.

4 comments

(A) is a difficult answer choice to parse. What's "not significantly more"? Certainly less --> not significantly more. Same --> not significantly more. Slightly more --> not significantly more.

It's only the last group "slightly more" that gives us some trouble. We would need to presume that "slightly more" is not already more 5%, which I think is reasonable. Of course, the LSAT thinks that's reasonable too.


28 comments

Contrary to recent speculations, no hardware store will be opening in the shopping plaza. If somebody were going to open a store there, they would already have started publicizing it. But there has been no such publicity.

Summarize Argument: Counter-Position
The author disputes a position others hold and explains why it is wrong. Despite what others claim, no hardware store is opening in the shopping plaza. If there was such a store opening, there would have been publicity. There has been no publicity (so the condition for a hardware store opening was not met).

Identify Conclusion
The conclusion is a claim about what will occur: “no hardware store will be opening in the shopping plaza.”

A
Some people have surmised that a hardware store will be opening in the shopping plaza.
This is context that sets up a position the author argues against.
B
A hardware store will not be opening in the shopping plaza.
This directly rephrases the author’s main claim about what will occur at the shopping plaza.
C
If somebody were going to open a hardware store in the shopping plaza, that person would already have started publicizing it.
This is support for why no hardware store will be opening.
D
It would be unwise to open a hardware store in the shopping plaza.
No information about what is wise is contained in the stimulus.
E
There has been no publicity concerning the opening of a hardware store in the shopping plaza.
This is additional support for why no hardware store will be opening.

3 comments

Ethicist: Although science is frequently said to be morally neutral, it has a traditional value system of its own. For example, scientists sometimes foresee that a line of theoretical research they are pursuing will yield applications that could seriously harm people, animals, or the environment. Yet, according to science’s traditional value system, such consequences do not have to be considered in deciding whether to pursue that research. Ordinary morality, in contrast, requires that we take the foreseeable consequences of our actions into account whenever we are deciding what to do.

Summary

Science has a traditional value system of its own. For example, scientists sometimes foresee research yielding harmful consequences. However, according to scientist’s traditional value system, these consequences do not have to be considered when deciding what to research. In contrast, ordinary morality would require taking foreseeable consequences into account when deciding what to do.

Strongly Supported Conclusions

Sometimes scientists may follow their traditional value system and violate ordinary morality at the same time.

A
Scientists should not be held responsible for the consequences of their research.

This answer is unsupported. The stimulus does not suggest what scientists should or should not be held accountable for. The stimulus is limited to the contrast between two different value systems.

B
According to the dictates of ordinary morality, scientists doing research that ultimately turns out to yield harmful applications are acting immorally.

This answer is unsupported. Ordinary morality requires taking foreseeable consequences into account. If the harm that results in this answer choice is not foreseeable, then scientists cannot be said to be violating ordinary morality.

C
Science is morally neutral because it assigns no value to the consequences of theoretical research.

This answer is unsupported. We don’t know from the stimulus whether science is in fact morally neutral. We only know that science is frequently said to be morally neutral.

D
It is possible for scientists to both adhere to the traditional values of their field and violate a principle of ordinary morality.

This answer is strongly supported. Scientists’ traditional value system does not require taking into account foreseeable consequences, while ordinary morality does.

E
The uses and effects of scientifically acquired knowledge can never be adequately foreseen.

This answer is unsupported. To say that these can “never” be adequately foreseen is too strong. It’s possible that these effects can be adequately foreseen, it’s just that the traditional value system for science does not require scientists to take these effects into account.


8 comments

The number of serious traffic accidents (accidents resulting in hospitalization or death) that occurred on Park Road from 1986 to 1990 was 35 percent lower than the number of serious accidents from 1981 to 1985. The speed limit on Park Road was lowered in 1986. Hence, the reduction of the speed limit led to the decrease in serious accidents.

Summarize Argument
The author concludes that the speed reduction caused the decrease in serious accidents. This is because the number of serious accidents was 35% lower for the years after the speed reduction than the years before the speed reduction.

Notable Assumptions
Based solely on a correlation between the speed reduction and the reduction in serious accidents, the author assumes that the former caused the latter. This means she doesn’t believe there was some hidden third factor that occurred at the same time as the speed reduction (e.g. road repairs, better driving instruction, new hospitalization procedures, less traffic) that was the real reason why serious accidents decreased.

A
The number of speeding tickets issued annually on Park Road remained roughly constant from 1981 to 1990.
Even if speeding tickets remained the same, the limit indeed dropped in 1986. This doesn’t weaken the idea that the speed reduction caused the reduction in serious accidents.
B
Beginning in 1986, police patrolled Park Road much less frequently than in 1985 and previous years.
We have no idea what effect a police presence would have. We care about why accidents reduced after 1986.
C
The annual number of vehicles using Park Road decreased significantly and steadily from 1981 to 1990.
Since traffic gradually decreased throughout the decade, it makes sense that there would be less accidents near the end than near the start. Thus, we have another reason why serious accidents decreased that doesn’t include the speed reduction.
D
The annual number of accidents on Park Road that did not result in hospitalization remained roughly constant from 1981 to 1990.
We only care about serious accidents, which result in either death or hospitalization.
E
Until 1986 accidents were classified as “serious” only if they resulted in an extended hospital stay.
This says that the definition of “serious” became more inclusive after the speed reduction. But accidents were decreasing at that point, so all this really does is tell us even fewer accidents were happening than the stimulus led us to believe.

29 comments