Logical Flaws guide
Logical Flaws questions ask you to name the error in an argument's reasoning: correlation treated as causation, necessary confused with sufficient, overgeneralisation, false dilemma, and the like. The flaw is always in the reasoning, not in whether a premise is true.
The method
- Identify how the conclusion is supposed to follow from the premises.
- Name the reasoning error in that move (e.g. correlation ≠ causation, necessary ≠ sufficient).
- Reject options that merely dispute a fact — a flaw is about the reasoning.
- Match the exact flaw family, not just a plausible-sounding one.
Common mistakes
- Offering a factual objection instead of a reasoning flaw.
- Naming the right family but the wrong specific flaw.
- Describing the conclusion rather than the flaw in reaching it.
- Assuming a premise is false when the task is about the logic.
Frequently asked questions
Can the flaw be that a premise is untrue?
No. These questions assume the premises and ask what's wrong with the reasoning that connects them to the conclusion.