LSAT 105 – Section 2 – Question 07

LSAT 105 - Section 2 - Question 07

February 1999

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT105 S2 Q07
+LR
+Exp
Except +Exc
Must be true +MBT
Conditional Reasoning +CondR
A
3%
162
B
1%
162
C
1%
157
D
5%
160
E
91%
165
120
120
141
 +Easiest 145.978 +SubsectionMedium

The crux of creativity resides in the ability to manufacture variations on a theme. If we look at the history of science, for instance, we see that every idea is built upon a thousand related ideas. Careful analysis leads us to understand that what we choose to call a new theme or a new discovery is itself always and without exception some sort of variation, on a deep level, of previous themes.

Summary
Creativity requires one to make changes to an existing theme. Every new idea/theme/discovery is built on existing themes.
The stimulus can be diagrammed as follows:

Notable Valid Inferences
This is a MBT Except question. This means all the wrong answers can be logically inferred from the stimulus. The right answer cannot be logically inferred from the stimulus.
Some examples of valid logical inferences from the stimulus are: there are no new themes which are not built on existing themes, and if one lacks the ability to modify a theme, they lack creativity.

A
A lack of ability to manufacture a variation on a previous theme connotes a lack of creativity.
This must be true. We know the ability to manufacture variations on a theme is required for creativity. A lack of the latter implies a lack of the former. We can see this by taking the contrapositive of the first conditional statement.
B
No scientific idea is entirely independent of all other ideas.
This must be true. The stimulus tells us that every idea in science “is built upon a thousand related ideas.” Therefore, no idea can be entirely independent of all others.
C
Careful analysis of a specific variation can reveal previous themes of which it is a variation.
This must be true. The stimulus says that by carefully analyzing a new theme, we can see the previous themes from which it is derived. This is also what (C) is saying.
D
All great scientific discoverers have been able to manufacture a variation on a theme.
This must be true. All great scientific discoverers must have made at least one discovery, and we know all discoveries are variations of existing themes. Therefore, the discoverers must have been able to manufacture at least one variation on an existing theme.
E
Some new scientific discoveries do not represent, on a deep level, a variation on previous themes.
This must be false. (E) contradicts the final sentence of the stimulus (which is represented in the second conditional statement): all discoveries are a variation on a previous theme.

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LSAT PrepTest 105 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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