LSAT 140 – Section 3 – Question 02

LSAT 140 - Section 3 - Question 02

December 2013

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT140 S3 Q02
+LR
Point at issue: disagree +Disagr
Value Judgment +ValJudg
A
3%
158
B
1%
154
C
1%
153
D
93%
165
E
2%
157
129
139
149
 +Easier 149.74 +SubsectionMedium

Video of JY doing this

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Klein: The fact that the amount of matter that we have found in our galaxy is only one-tenth of what Einstein’s theory predicts gives us good reason for abandoning his view.

Brown: Given the great successes of Einstein’s theory, it would be better to conclude that most of the matter in our galaxy has not yet been found.

Speaker 1 Summary
Klein argues toward the implied conclusion that we should abandon Einstein’s theory. This is the conclusion indicated by Klein’s premise: that the fact that we’ve found much less matter in the galaxy than Einstein predicted justifies abandoning Einstein’s theory.

Speaker 2 Summary
Brown argues that instead of abandoning Einstein’s theory based on this inconsistency, we should instead believe that most of the matter in our galaxy hasn’t been found yet. In support, Brown points out that Einstein’s theory has had great successes (suggesting that one inconsistency isn’t enough to justify abandoning it).

Objective
We need to find something that Klein and Brown disagree about. Their disagreement is over whether we should abandon Einstein’s theory.

A
Scientists have found only one-tenth of the matter that Einstein’s theory predicts.
Both speakers agree that this is true. Klein directly makes this claim. Brown doesn’t refer to this inconsistency explicitly, but talks about what we should believe based on this fact, indicating an agreement that it’s true.
B
Einstein’s theory has achieved many successes.
Brown agrees with this, but Klein doesn’t state an opinion. Brown directly makes this claim. Klein just doesn’t say anything about the successes of Einstein’s theory, so we can’t know what Klein thinks.
C
It is possible to determine the amount of matter in our galaxy without relying on Einstein’s theory.
Neither speaker makes this claim. The discussion isn’t about how to determine the amount of matter in the galaxy, it’s about whether the observed amount of matter justifies abandoning Einstein’s theory.
D
The failure to find all of the matter predicted by Einstein’s theory should lead us to abandon it.
Klein agrees with this, but Brown disagrees, making this the point of disagreement. Klein thinks that because of the inconsistency between the theory’s prediction and our observations, we should abandon the theory. Brown thinks we should look for more matter instead.
E
Scientists are able to accurately judge the amount of matter that has been found in our galaxy.
Both speakers most likely agree with this. Neither speaker disputes that scientists know how much matter we’ve found. Also, this would have to be the case to accurately compare our findings with Einstein’s theory’s predictions.

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LSAT PrepTest 140 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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