LSAT 144 – Section 4 – Question 14

LSAT 144 - Section 4 - Question 14

October 2015

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT144 S4 Q14
+LR
Sufficient assumption +SA
Conditional Reasoning +CondR
Link Assumption +LinkA
Kick It Up +KIU
A
3%
159
B
83%
165
C
8%
160
D
3%
160
E
3%
154
130
143
156
 +Medium 147.675 +SubsectionMedium

Live Commentary

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Certain methods of creating high-quality counterfeit banknotes involve making accurate measurements of the images printed on genuine banknotes. Hence, if the production of high-quality counterfeit banknotes is to be prevented, some of the images on banknotes must be made very difficult or impossible to measure accurately.

Summary
To stop the production of counterfeit bills, it’s necessary that at least some images on real bills be hard to measure accurately. This is because accurate measurements are involved in at least some counterfeiting methods.

Missing Connection
The conclusion is that interfering with measurement is necessary to stop counterfeiting. But the premise just tells us that measurements can be involved in the process, without saying how important those measurements actually are. That’s not good enough to reach such a strong conclusion. Couldn’t there be other ways to stop counterfeiting besides dealing with the measurement issue?

If we knew that making accurate measurements was sufficient, all on its own, for counterfeiting, then the conclusion would properly follow. In that case, dealing with the measurement issue would have to be part of counterfeit prevention!

A
Today’s copying technology is sophisticated enough to replicate almost any paper product with great precision.
This doesn’t explain why measurement is so important to the counterfeiting process. We still have no reason to think that interfering with measurement is the only way to stop counterfeiting.
B
Once the images printed on a banknote have been measured accurately, there is no further impediment to the banknote’s being exactly replicated.
This says that being able to make accurate measurements is sufficient to be able to counterfeit a bill. This is simply the contrapositive of the conclusion! So assuming (B) guarantees that the conclusion follows.
C
Governments have better printing technology available to them than counterfeiters do.
This doesn’t explain why measurement is so important to the counterfeiting process. We still have no reason to think that interfering with measurement is the only way to stop counterfeiting.
D
Few countries produce banknotes with images that are difficult for counterfeiters to measure accurately.
What countries actually do is irrelevant. The conclusion is conditional, meaning it’s entirely hypothetical: if counterfeiting is to be stopped, then images must be hard to measure. Whether any countries happen to follow that advice has no effect on the validity of that advice.
E
New designs in banknotes generally lead to decreases in the amount of counterfeit currency in circulation.
This doesn’t explain why measurement is so important to the counterfeiting process. We still have no reason to think that interfering with measurement is the only way to stop counterfeiting.

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LSAT PrepTest 144 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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