Ethicist: On average, animals raised on grain must be fed sixteen pounds of grain to produce one pound of meat. A pound of meat is more nutritious for humans than a pound of grain, but sixteen pounds of grain could feed many more people than could a pound of meat. With grain yields leveling off, large areas of farmland going out of production each year, and the population rapidly expanding, we must accept the fact that consumption of meat will soon be morally unacceptable.

Summarize Argument
The author concludes that meat consumption will soon be immoral. This is because meat production is more resource-intensive than the plant-based alternative, and already agricultural resources are diminishing while the human population continues expanding.

Notable Assumptions
The author assumes that crops that feed animals can be efficiently used to feed humans, and that the land on which animals are raised could be used to grow those same crops. The author also assumes that because animal agriculture has undesirable consequences, the mere practice of eating meat is itself morally unacceptable. The author therefore assumes that all forms of meat consumption exhibit the same problems found in the animal agriculture he describes.

A
Even though it has been established that a vegetarian diet can be healthy, many people prefer to eat meat and are willing to pay for it.
It doesn’t matter what people “prefer.” The author is drawing a moral judgement about what people should do.
B
Often, cattle or sheep can be raised to maturity on grass from pastureland that is unsuitable for any other kind of farming.
Certain types of animals are raised with resources that couldn’t be put towards direct human use. Thus, the author’s argument glosses over an entire category of meat consumption while drawing a moral conclusion about meat consumption, generally.
C
If a grain diet is supplemented with protein derived from non-animal sources, it can have nutritional value equivalent to that of a diet containing meat.
If anything, this strengthens the author’s argument by showing that plant-based diets can satisfy humanity’s nutritional needs. We need to weaken his argument.
D
Although prime farmland near metropolitan areas is being lost rapidly to suburban development, we could reverse this trend by choosing to live in areas that are already urban.
Even if this trend could be reversed, we have no reason to believe it actually will be reversed. This doesn’t challenge anything in the author’s argument.
E
Nutritionists agree that a diet composed solely of grain products is not adequate for human health.
The author never said humans should only eat grains. He simply claimed eating meat will soon be morally unacceptable.

46 comments

Editor: Many candidates say that if elected they will reduce governmental intrusion into voters’ lives. But voters actually elect politicians who instead promise that the government will provide assistance to solve their most pressing problems. Governmental assistance, however, costs money, and money can come only from taxes, which can be considered a form of governmental intrusion. Thus, governmental intrusion into the lives of voters will rarely be substantially reduced over time in a democracy.

Summarize Argument

The editor concludes that government intrusion into voters’ lives will not decrease. This is because voters prefer candidates who say they’ll assist with voters’ biggest issues. Acting on these issues costs the government money, which comes from taxes—a form of intrusion.

Notable Assumptions

The editor assumes politicians who promise to provide government assistance actually deliver on this promise. If they didn’t, there wouldn’t be a need for increased taxes and governmental intrusion.

A
Politicians who win their elections usually keep their campaign promises.

This strengthens the argument. It supports the editor’s assumption that politicians who promise to provide government assistance actually deliver on this promise.

B
Politicians never promise what they really intend to do once in office.

This weakens the argument. It exploits the author’s assumption that politicians who promise to provide government assistance will deliver on this promise.

C
The most common problems people have are financial problems.

This does not affect the argument. Voters prefer candidates who promise to help with their most pressing problems, which don’t also have to be their most common ones. In extension, there is no reason to believe that financial problems are voters’ most pressing problems.

D
Governmental intrusion into the lives of voters is no more burdensome in nondemocratic countries than it is in democracies.

This does not affect the editor’s argument, which is solely about democracies.

E
Politicians who promise to do what they actually believe ought to be done are rarely elected.

This does not affect the argument, which doesn’t discuss whether politicians promise to do things they believe should be done—instead, the argument focuses on politicians’ promises and the consequences of them keeping these promises.


26 comments

Philosopher: Nations are not literally persons; they have no thoughts or feelings, and, literally speaking, they perform no actions. Thus they have no moral rights or responsibilities. But no nation can survive unless many of its citizens attribute such rights and responsibilities to it, for nothing else could prompt people to make the sacrifices national citizenship demands. Obviously, then, a nation _______.

Summary

The philosopher says that nations are not persons, and do not think, feel, or perform actions. They therefore have no moral rights or responsibilities. However, in order for a nation to survive, its citizens must attribute rights and responsibilities to the nation, because this is necessary to drive people to sacrifice for their nation. So, what can we conclude about nations?

In Lawgic:

P1: nation → /person & /think & /feel & /act → /rights & /responsibilities

P2: nation survives → citizens sacrifice → citizens attribute rights & responsibilities

C: ?

Strongly Supported Conclusions

The philosopher’s claims let us conclude that a nation can only survive if its citizens believe something that is false, i.e. that the nation has rights and responsibilities.

A
cannot continue to exist unless something other than the false belief that the nation has moral rights motivates its citizens to make sacrifices

This is not supported. The philosopher doesn’t suggest another factor that could be needed to motivate citizens. In fact, the philosopher says this false belief is the only thing that can motivate citizens to make sacrifices, so suggesting another motivator doesn’t make sense.

B
cannot survive unless many of its citizens have some beliefs that are literally false

This is strongly supported. The philosopher establishes that a nation cannot survive unless its citizens attribute rights and responsibilities to it. We know that nations can’t actually have rights and responsibilities, so survival requires citizens to hold a false belief.

C
can never be a target of moral praise or blame

This is not supported. The philosopher doesn’t discuss moral praise and blame, so we don’t know what relationship—if any—they have to concepts like moral rights and responsibilities. Because of that, we can’t say if nations could or could not be targeted.

D
is not worth the sacrifices that its citizens make on its behalf

This is not supported. The philosopher doesn’t bring up the idea of worthiness at all, and definitely doesn’t make a claim about whether or not nations are worthy of their citizens’ sacrifices.

E
should always be thought of in metaphorical rather than literal terms

This is anti-supported. The philosopher begins by discussing nations in literal terms (i.e. explaining that they are not literally persons), which strongly implies that it’s legitimate to at least sometimes discuss nations in literal terms.


42 comments

A consumer magazine surveyed people who had sought a psychologist’s help with a personal problem. Of those responding who had received treatment for 6 months or less, 20 percent claimed that treatment “made things a lot better.” Of those responding who had received longer treatment, 36 percent claimed that treatment “made things a lot better.” Therefore, psychological treatment lasting more than 6 months is more effective than shorter-term treatment.

Summarize Argument
The author concludes that psychological treatment lasting more than 6 months is more effective than shorter-term treatment. She bases this on a magazine survey that shows a greater percentage of people report being very satisfied after 6+ months of treatment than those who had less than 6 months of treatment.

Notable Assumptions
In order for treatment lasting longer than 6 months to be “more effective,” the author must either believe that the treatment plans were treating similar psychological issues, or that the issues matter less than the plans. This means the author assumes that the length of a treatment plan matters more for success than the issue the treatment aims to solve. The also means the author assumes that the group who did more 6 months of treatment don’t significantly differ from the group that did less than 6 months.

A
Of the respondents who had received treatment for longer than 6 months, 10 percent said that treatment made things worse.
We would need a comparative aspect for this to work. We don’t know what percentage of the group who received short-term treatment responded the same way.
B
Patients who had received treatment for longer than 6 months were more likely to respond to the survey than were those who had received treatment for a shorter time.
Even if they were more likely to respond, we don’t know how that would change their answers. Nor do we know if the difference in sample size makes a difference.
C
Patients who feel they are doing well in treatment tend to remain in treatment, while those who are doing poorly tend to quit earlier.
This points out a key difference between the two groups of patients. It may not be that more than 6 months of treatment is more effective than short-term treatment plans, but that people who believe treatment is successful continue treatment beyond 6 months.
D
Patients who were dissatisfied with their treatment were more likely to feel a need to express their feelings about it and thus to return the survey.
We don’t know anything about people who were dissatisfied. We only know about people who think treatment helped “a lot.”
E
Many psychologists encourage their patients to receive treatment for longer than 6 months.
We don’t care what psychologists think their patients should do. We need to weaken the connection between the study and the author’s conclusion.

28 comments