LSAT 127 | Section 1 | Logical Reasoning: Q26

LR Question 26 Explanation

QUESTION TEXT: Essayist: Common sense, which is always progressing, is nothing…

QUESTION TYPE: Must be True

FACTS:

1. Common sense is a time tested collection of useful theories.
2. New, more useful theories will eventually take the place of current theories.
3. Slow absorption of theories means that common sense contains some theories that are obsolete.

ANALYSIS: We don’t have any information about theories that are not currently part of common sense.

___________

1. We don’t know this. In fact, common sense would tell us the older theories are more likely to be useful, as they have withstood the test of time.
2.  It’s not the frequency of new theories, but rather the slow process of change which prevents their absorption. It “absorbs new theories slowly.”
3.  Not necessarily true. There could be some theories which are perfect as they are, and will never be replaced.
4. They only said that obsolete theories are eventually replaced by more useful ones, not that every theory within common sense will be replaced. Some might remain useful or not be replaced at all.
5. CORRECT. Yes. The slow process of absorption guarantees this. Until the theories are replaced, there will be some theories that are less useful than some others waiting to be absorbed.

Recap: The question begins with “Essayist: Common sense, which is always progressing, is nothing”. It is a Must be True question. Learn more about LSAT MBT questions in our guide to LSAT Logical Reasoning question types.