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PrepTest 73, Logical Reasoning 1, Question 5



Summary
The content focuses on identifying and understanding the flaw in an argument within the context of a GRE question, specifically through the analysis of an argument about Lemaitre's theory.
  • Understanding the flaw in an argument requires identifying the argument's conclusion and evidence.
  • Lemaitre's theory suggests the universe began with a primeval atom explosion, which is evidenced by galaxies accelerating away from each other.
  • The argument's flaw is the assumption that Lemaitre's theory is inadequate because another theory predicts the same outcome.
  • The correct answer choice (D) highlights that one theory predicting data correctly does not invalidate an alternative theory.
  • Other answer choices are dismissed because they misinterpret the argument's structure or the nature of its logical error.
Chapters
00:00
Understanding Argument Flaws
00:32
Analyzing Lemaitre's Theory
01:28
Identifying the Logical Error
01:40
Evaluating Answer Choices