Chinh: Television producers should not pay attention to the preferences of the viewing public when making creative decisions. Great painters do not consider what the museum-going public wants to see.

Lana: But television is expressly for the viewing public. So a producer is more like a CEO than like an artist. Just as a company would be foolhardy not to consider consumers’ tastes when developing products, the TV producer must consider viewers’ preferences.

Summarize Argument
Chinh concludes that viewers’ preferences shouldn’t be a factor in TV producers’ creative decisions. As support, Chinh uses an analogy: great painters don’t think about the desires of museum attendees.

Identify and Describe Flaw
As Lana says, Chinh uses an analogy that isn’t analogous enough. Chinh compares the relationship between TV producers and the viewing public with the relationship between great painters and the museum-going public, but the comparison falls short. TV producers may be more directly influenced by audience preferences than painters are by museum visitors.

A
is circular
This is not a circular argument. The premise isn’t just restating the conclusion.
B
relies on a sample of consumers that is unrepresentative of consumers in general
This is descriptively inaccurate. Chinh’s argument doesn’t rely on a sample of consumers.
C
infers from the effect produced by an action that the action is intended to produce that effect
This is descriptively inaccurate. Chinh’s argument does not make any inferences about the intentions of actions based on the outcomes of the actions.
D
fails to consider the possibility that painters may in fact try to please the museum-going public
This is not the issue that Lana has with Chinh’s argument. Chinh explicitly states that great painters don’t consider the desires of the museum-going public, and Lana’s issue with Chinh’s argument is that the analogy is weak, not that Chinh may be wrong about painters.
E
offers a faulty analogy
This is the flaw. As Lana points out, TV producers may be more beholden to the desires of the viewing public than great painters are to the desires of museum-goers.

3 comments

Tania: A good art critic is not fair in the ordinary sense; it is only about things that do not interest one that one can give a truly unbiased opinion. Since art is a passion, good criticism of art cannot be separated from emotion.

Monique: Art is not simply a passion. The best art critics passionately engage with the artwork, but render their criticism only after shedding all of their biases and consulting general principles of aesthetics.

Speaker 1 Summary
Tania concludes that a good art critic isn’t fair. This is because an unbiased (fair) critic needs to be uninterested in art, but good art criticism requires emotion (which Tania is implying requires interest in the art).

Speaker 2 Summary
Monique asserts that the best art critics shed all their biases before delivering their criticism. She acknowledges that art is a passion, but says it’s not only a passion.

Objective
We’re looking for a point of disagreement. The speakers disagree over whether good art critics can be unbiased. Tania thinks they can’t. Monique thinks that can.

A
art is not simply a passion
Tania doesn’t have an opinion. She says that art is a passion. But we don’t know whether she thinks it’s more than just a passion.
B
good art criticism is sometimes unbiased
This is a point of disagreement. Tania thinks this is not possible, because good art criticism requires emotion, which she implies involves being interested in art. Monique thinks a good art critic can be unbiased.
C
art critics should not feel emotion toward artworks
Neither speaker has an opinion. Although both recognize that good art critics do feel passion toward art, we don’t know whether they think critics should or should not feel that passion.
D
fairness generally requires minimizing the influence of bias
Neither speaker has an opinion. Although Tania discusses fairness in the context of art criticism, we don’t know what she thinks about fairness in other contexts. Similarly, Monique discusses unbiased criticism, but we don’t know what she thinks about fairness generally.
E
the passionate engagement of the art critic with the artwork is the most important aspect of art criticism
Neither speaker has an opinion. We don’t know what either person thinks is the “most” important part of art criticism.

35 comments

This boulder is volcanic in origin and yet the rest of the rock in this area is sedimentary. Since this area was covered by southward-moving glaciers during the last ice age, this boulder was probably deposited here, hundreds of miles from its geological birthplace, by a glacier.

Summarize Argument: Phenomenon-Hypothesis
The author hypothesizes that the boulder was probably deposited in its location by a glacier. This is based on the fact that the boulder is volcanic, but the surrounding rock is sedimentary. In addition, we know the area had southward-moving glaciers during the last ice age.

Notable Assumptions
The author assumes that there’s no other more likely source of the boulder besides the glaciers that were moving southward during the last ice age.

A
Most boulders that have been moved by glaciers have not been moved more than 100 miles.
Even if most boulders moved by glaciers didn’t travel as far as this one did, that doesn’t undermine the support provided by the specific reasons offered for why this boulder was moved by glaciers. Most other boulders might not be volcanic within sedimentary rock.
B
The closest geological source of volcanic rock is 50 miles south of this boulder.
We have no reason to think the boulder must have come from the closest source. Maybe there’s a source north of the boulder that’s several hundred miles away, and the boulder was carried south by a glacier.
C
The closest geological source of volcanic rock is 50 miles north of this boulder.
We have no reason to think the boulder must have come from the closest source. Maybe there’s a source north of the boulder that’s several hundred miles away, and the boulder came from that source.
D
There are no geological sources of volcanic rock north of this boulder.
This makes the author’s hypothesis less plausible. If there are no geological sources of volcanic rock north of the boulder, it’s difficult to explain how a southward-moving glacier could have deposited the boulder in its current location. Where would the boulder have come from?
E
No other boulders of volcanic origin exist within 50 miles of this boulder.
Perhaps volcanic boulders are rare. This doesn’t shed light on the source of the volcanic boulder that we’re talking about.

32 comments

None of the students taking literature are taking physics, but several of the students taking physics are taking art. In addition, none of the students taking rhetoric are taking physics.

Summary
The stimulus can be diagrammed as follows:

Notable Valid Inferences
Some art students aren’t taking literature.

Some art students aren’t taking rhetoric.

Some students take neither rhetoric nor literature.

A
There are students who are taking art but not literature.
This must be true. As shown below, there must be some overlap between students taking art and students not taking literature.
B
None of the students taking literature are taking art.
This could be false. We know that some art students aren’t taking literature, but we can’t say that none of the literature students are taking art.
C
There are students who are taking rhetoric but not literature.
This could be false. We know that there are some students who take neither rhetoric nor literature; it could be the case that some students take one but not the other.
D
None of the students taking rhetoric are taking literature.
This could be false. We know that there are some students who take neither rhetoric nor literature; we just can’t say that no students who take rhetoric take literature.
E
There are students who are taking both art and literature.
This could be false. We know that some art students aren’t taking literature, but it could be the case that some students do take art and literature.

12 comments

This is a very hard question.

Not because of the argument, which is pretty straight forward. Rather, it's because of a very enticing trap wrong answer choice.

This is a Necessary Assumption question. We know this because the question stem states that the right answer choice "must" be assumed. It's needed. It's necessary.

If you don't know the difference between Necessary Assumptions v. Sufficient Assumptions, review that lesson.

The argument is saying that on a talk show, therapy is expected to be entertaining. I'm wondering, okay, it's expected to be entertaining but that doesn't mean the therapist will make it entertaining. Assuming otherwise is just that, an assumption.

We read on to find out that entertaining --almost always--> not high quality help. Now, this is just begging us to make the assumption that high quality help is to be valued over entertainment. And okay, you can assume that if you want. Just be aware you're making that assumption.

Otherwise, the conclusion that follows - therefore therapists shouldn't do therapy on talk shows - will just seem so natural and obvious to you that you're thinking, well okay then, I think this is a fantastic argument. That's not good because you needed to have seen and felt the gap, the assumption made.

Piecing the two premises together, we only get to say that therapists doing therapy on talk shows are expected to do something that's likely going to result in less-than-high-quality-therapy.

So what are the chances that they will provide less-than-high-quality-therapy? Well that depends on the chances that they do what the talk show expects them to do. We can change this number around later, but let's just say they're 70% likely to do what they're expected to do, so they're 70% likely to provide less-than-high-quality-therapy.

Does it follow from that statement that therapists should not do therapy on talk shows?

Only if we draw a bridge between those two statements.

So, hey, look at (C). It draw an awesome bridge. It says that anytime there is even a chance that the therapy might be less than high quality, it should not be provided. Think about what that means. It's setting a very low trigger. What if there is only a 2% chance of us providing less than high quality therapy? (C) would trigger and it would say "Sorry, a chance exists, so no go." 

Now, for our case, the chances that on our therapist will provide less-than-high-quality-therapy on the talk show is a whopping 70%. Of course (C), with its low trigger, triggers and helps our argument a lot. 

But we call that a sufficient assumption, not a necessary assumption. Remember your first lesson in Necessary Assumptions? You can see this just by tossing (C) out. You can deny that the trigger has to be that low. You can raise the trigger by, say, 10% and it would NOT wreck our argument. In fact, that's still low enough to trigger for our premises.

So you see that (C) really is not necessary.

(E) sets the trigger just right. It increases the trigger from (C) to just around 70%. The trigger condition is set to match the condition laid out in the two premises.


67 comments

Lance: If experience teaches us nothing else, it teaches us that every general rule has at least one exception.

Frank: What you conclude is itself a general rule. If we assume that it is true, then there is at least one general rule that has no exceptions. Therefore, you must withdraw your conclusion.

Summarize Argument: Counter-Position
Frank concludes that Lance is wrong to claim that “every general rule has at least one exception.” This is because, according to Lance’s claim, Lance’s own general rule would need to have an exception. In other words, if Lance’s claim is true then not every general rule has at least one exception, in which case Lance’s claim cannot be true.

Describe Method of Reasoning
Frank counters Lance’s claim by pointing out that it is self-contradictory and cannot be logically true. As Frank points out, Lance’s general rule that “every general rule has at least one exception” entails that this rule itself must have at least one exception. If Lance’s rule has an exception, then logically, there must be some general rule with no exception, which would make Lance’s rule false.

A
demonstrating that Lance assumes the very thing he sets out to prove
Frank doesn’t demonstrate that Lance assumes the point that he is trying to prove. Instead, Frank demonstrates that Lance’s point is self-contradictory and therefore invalid.
B
showing that Lance’s conclusion involves him in a contradiction
Frank shows that Lance’s conclusion is self-contradictory, because in following the chain of inferences from Lance’s rule, one must end up breaking that rule.
C
showing that no general rule can have exceptions
Frank doesn’t claim that no general rule can have exceptions, only that Lance’s assertion that every general rule must have an exception is invalid.
D
establishing that experience teaches us the opposite of what Lance concludes
Frank doesn’t claim that the opposite of Lance’s conclusion is true, only that Lance’s conclusion is invalid. Frank also never talks about what experience teaches us.
E
showing that it has no implications for any real cases
Frank doesn’t bring up real cases in his argument. He only shows that Lance’s conclusion is logically contradictory.

5 comments