LSAT (Law School Admission Test)Logical ReasoningMedium

Professor: To truly understand the complexities of ancient societies, one must immerse oneself in primary historical texts. Therefore, students who primarily rely on secondary sources, such as textbooks and scholarly articles, will never achieve a comprehensive understanding of these societies.

  1. AIt ignores the possibility that secondary sources can synthesize and interpret primary texts in a way that aids understanding.
  2. BIt assumes that primary historical texts are the only valid source of information about ancient societies.
  3. CIt fails to define what 'comprehensive understanding' entails.
  4. DIt overlooks that some primary texts might be too fragmented or obscure to provide a complete picture.
Show answer & explanation

Correct answer: A. It ignores the possibility that secondary sources can synthesize and interpret primary texts in a way that aids understanding.

The professor makes an absolute claim that relying *primarily* on secondary sources prevents comprehensive understanding. This ignores the crucial role of secondary sources, which often analyze, contextualize, and summarize primary texts, making them accessible and understandable, especially for beginners. A comprehensive understanding might even require both.

Why the other options are wrong

  • B. The professor implies primary texts are essential, but the flaw is in dismissing secondary texts. The argument doesn't necessarily claim primary texts are the *only* valid source, but rather that secondary sources are insufficient *on their own* for comprehensive understanding.
  • C. While 'comprehensive understanding' could be more defined, the core logical flaw lies in the relationship between the types of sources and the goal of understanding, not in the definition of the goal itself.
  • D. This option weakens the professor's assertion about primary texts, but the argument's flaw lies in its condemnation of secondary sources, not in an overestimation of primary sources.

False Dichotomy (Implied)

A fallacy that presents only two options or outcomes as exhaustive and mutually exclusive, when in reality there are other possibilities or a combination of options is possible.

  • Often presented as 'either/or' situations.
  • Limits the scope of possibilities unfairly.
  • Can be implied rather than explicitly stated.

Memory trick: Don't omit the middle ground; other options can always be found!

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