LSAT 109 – Section 3 – Question 15

LSAT 109 - Section 3 - Question 15

December 2000

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Question QuickView	Type	Tags	Answer Choices	Curve	Question Difficulty	Psg/Game/S Difficulty	Explanation
PT109 S3 Q15	+LR	Flaw or descriptive weakening +Flaw Analogy +An	A 79% 168 B 3% 160 C 15% 162 D 2% 157 E 0% 153	143 152 162	+Medium	148.18 +SubsectionMedium

Scientists hoping to understand and eventually reverse damage to the fragile ozone layer in the Earth’s upper atmosphere used a spacecraft to conduct crucial experiments. These experiments drew criticism from a group of environmentalists who observed that a single trip by the spacecraft did as much harm to the ozone layer as a year’s pollution by the average factory, and that since the latter was unjustifiable so must be the former.

treats as similar two cases that are different in a critical respect

This is how the environmentalists’ argument errs. While a single trip by the spacecraft may do as much damage to the ozone layer as a year’s pollution by a factory, the spacecraft’s trips have the potential to help the ozone layer in a way that factories don’t.

justifies a generalization on the basis of a single instance

The environmentalists don’t justify a generalization. They only say that trips by the spacecraft are unjustified because of the damage they do to the ozone layer.

fails to distinguish the goal of reversing harmful effects from the goal of preventing those harmful effects

The environmentalists don’t have to distinguish these goals. They only discuss the scientists’ goal of reversing the harm that has been done to the ozone layer.

attempts to compare two quantities that are not comparable in any way

The spacecraft and an average factory are comparable, as they both damage the ozone layer.

presupposes that experiments always do harm to their subjects

We don’t know if they presuppose this. The environmentalists only discuss the spacecraft experiment and never state that all experiments harm their subjects.

LSAT 109 – Section 3 – Question 15

LSAT 109 - Section 3 - Question 15

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LSAT PrepTest 109 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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