Principle: People should not feed wild animals because it makes them dependent on humans and less likely to survive on their own.

Situation: Bird lovers commonly feed wild birds to attract them to their yards and gardens.

"Surprising" Phenomenon

How can feeding wild birds be justified when doing so makes the birds dependent on humans and less likely to survive on their own?

Objective

The stimulus provides a general principle and then a specific example of a behavior that defies the principle’s suggestion. In order to justify the specific example, the right answer must add some information about the lived reality of the bird lovers and the birds that the general principle fails to account for or consider.

A
Congregating around human bird feeders makes wild birds more vulnerable to predators and diseases.

This is the opposite of helpful. Instead of explaining why feeding birds could be justified, (A) adds another reason why it isn’t.

B
Some species of wild birds benefit humans by consuming large numbers of mosquitoes and other insect pests.

We need an answer that justifies feeding birds, not an explanation of how birds benefit humanity. Additionally, by describing how birds benefit humans, (B) adds to the importance of protecting birds, which does the opposite of justifying feeding—and thereby harming—them.

C
Wild birds are much more likely to congregate in yards where they are fed than in yards where they are not fed.

This makes sense—of course birds are more likely to flock to a place where they’re provided with food! If this answer went further and told us that bird congregation is good for birds in some way, it might’ve been right. As it is, (C) doesn’t provide the justification we need.

D
Most bird lovers are very active in efforts to preserve the habitats of threatened species of wild birds and other animals.

This has nothing to do with feeding birds, so it doesn’t justify that act. It might make us more sympathetic to bird lovers—at least they’re trying to preserve habitats even though they’re also harming birds by feeding them—but it doesn’t justify the choice to feed the birds.

E
Human settlement is so pervasive in the habitat of most wild birds that they must depend in part on human sources of food for survival.

This is the justification we’re looking for! Even if it’s theoretically bad to feed birds because it makes them dependent on humans, the reality is that most wild birds already depend on humans, so feeding them is actually important for their survival.


9 comments

Michaela: I think doctors who complain about patients doing medical research on the Internet are being a little unfair. It seems only natural that a patient would want to know as much as possible about his or her condition.

Sam: It is not unfair. Doctors have undergone years of training. How can you maintain that a doctor’s opinion is not worth more than something an untrained person comes up with after searching the Internet?

Summary

In response to Michaela’s claim that doctors are being unfair when complaining about patients doing their own medical research, Sam states that these doctors are not being unfair because doctors have years of training. Sam asks how Michaela can believe a doctor’s opinion is not worth more than an untrained person.

Strongly Supported Conclusions

The opinions of untrained patients are worth just as much as a doctor’s opinion.

A
health information found on the Internet is trustworthy

This answer is unsupported. Sam does not make a judgment call whether this information is in fact trustworthy or not.

B
the opinion of a patient who has done Internet research on his or her condition should have at least as much weight as the opinion of a doctor

This answer is strongly supported. Sam asks Michaela how she can maintain that a doctor’s opinion is not worth more than that of an untrained person.

C
the opinion of a patient’s own doctor should not be given more weight than the opinions of doctors published on websites

This answer is unsupported. The stimulus does not give us any information allowing us to make comparisons between doctors. We only have information to compare the opinions of doctors and untrained persons.

D
a doctor’s explanation of a patient’s symptoms should be taken more seriously than the patient’s own view of his or her symptoms

This answer is unsupported. Sam’s response indicates she believes a patient’s opinions should not hold as much weight as that of a doctor’s, not that doctor’s opinions should be taken more seriously.

E
patients who do not research their conditions on the Internet give their doctors’ opinions more consideration

This answer is unsupported. We don’t know from the stimulus what type of patients take their doctor’s opinions more seriously.


4 comments

Legislator: A foreign company is attempting to buy FerroMetal, a domestic iron-mining company. We should prohibit this sale. Since manufacturing is central to our economy, we need a dependable supply of iron ore. If we allow a foreign company to buy FerroMetal, we will have no grounds to stop foreign companies from buying other iron-mining companies. Soon foreigners will control most of the iron mining here, leaving our manufacturers at their mercy. The end result will be that our manufacturers will no longer be able to rely on a domestic supply of iron ore.

Summarize Argument
The legislator concludes that the sale of FerroMetal should be prohibited. He supports this by saying that manufacturing is crucial to the economy, so the country needs a reliable supply of iron ore. And if a foreign company buys FerroMetal, it would lead to more foreign control over iron mining, eventually making it impossible for manufacturers to rely on domestic iron ore.

Identify and Describe Flaw
The legislator assumes that selling FerroMetal would lead to foreign control over iron mining, which would make it impossible for manufacturers to rely on domestic iron ore. But he doesn’t give any evidence that the sale of FerroMetal would actually cause this chain of consequences, nor does he consider other possible outcomes.

A
The argument draws a conclusion that simply restates a premise presented in support of that conclusion.
This is the cookie-cutter flaw of circular reasoning, where the argument’s conclusion merely restates one of its premises. The legislator doesn’t make this mistake. His premises don’t support his conclusion well, but they are distinct from his conclusion.
B
The argument takes for granted that what is true of one particular industry is true of industry in general.
The legislator doesn’t assume that what’s true of the iron industry is true of industry in general. Instead, he assumes that the sale of FerroMetal will lead to a long chain of consequences within the iron industry.
C
The argument defends a practice solely on the grounds that the practice is widely accepted.
The legislator argues that the sale should be prohibited, but not on the grounds that prohibiting the sale is widely accepted. Instead, he argues that the sale should be prohibited because it will lead to a chain of negative consequences for iron companies and manufacturers.
D
The argument presents a chain of possible consequences of a given event as if it were the only possible chain of consequences of that event.
The legislator assumes that the sale of FerroMetal will inevitably lead to a chain of possible consequences. He never provides any evidence that it will actually cause these consequences, nor does he consider other potential outcomes.
E
The argument concludes that one event would cause a second event even though the second event would have to precede the first.
The legislator argues that the sale of FerroMetal would cause multiple other events, but there’s no reason to believe that those events would have to precede the sale of FerroMetal.

7 comments