Question

Difficulty: EasyFlaw in the Reasoning

Aviation Safety Consultant: In order for a newly designed commercial cargo drone to receive flight clearance from the civil aviation authority, it must be equipped with an automated collision-avoidance radar system. The AeroHawk drone model has been equipped with an automated collision-avoidance radar system. Therefore, the civil aviation authority will certainly grant flight clearance to the AeroHawk.

Which of the following most accurately describes a flaw in the aviation safety consultant's reasoning?

  1. A
    presumes without justification that an event that is correlated with another event must have been caused by it
  2. B
    bases its conclusion on an attack against the regulatory authority's credibility rather than on its technical requirements
  3. treats a condition that is necessary for receiving flight clearance as if it were sufficient to guarantee receiving that clearanceAnswer
  4. D
    rejects the possibility that the AeroHawk drone actually possesses an automated collision-avoidance radar
  5. E
    presupposes that automated collision-avoidance radar systems never suffer technical malfunctions

Answer

The argument is flawed because it treats a condition that is necessary for receiving flight clearance as if it were sufficient to guarantee receiving that clearance.
The correct response accurately captures the structural flaw: the consultant establishes that having an automated collision-avoidance radar is a necessary requirement ('in order for... it must be equipped') for receiving flight clearance. However, the consultant erroneously treats satisfying this single prerequisite as sufficient to guarantee that clearance will be granted, ignoring the fact that other regulatory criteria may still need to be satisfied.

Step-by-Step Solution

1
Identify the premises and the conclusion of the stimulus.
Premise: Flight clearance requires an automated collision-avoidance radar system (Flight Clearance → Radar). Premise: AeroHawk has the radar system. Conclusion: AeroHawk will definitely receive flight clearance.
Deconstructing the argument into its core components reveals the relationship between the evidence and the main claim.
2
Analyze the formal logic linking the condition to the outcome.
The phrase 'in order for X, it must have Y' establishes that radar is a necessary requirement for clearance, not a guarantee of clearance.
Distinguishing between requirements (necessary conditions) and guarantees (sufficient conditions) is essential to spotting conditional fallacies.
3
Evaluate the inferential leap made to reach the conclusion.
The consultant concludes that meeting the requirement guarantees the outcome, committing a mistaken reversal.
Matching this inferential error to the description of treating a necessary condition as sufficient pinpoints the correct answer.

Key Concept

Mistaken Reversal / Confusing Necessary and Sufficient Conditions
Estimated Time:1m 0s
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