Review the three argumentative statements provided below. Match each argument with the formal description that most accurately characterizes its central reasoning vulnerability.
- Paleoclimatologist: Deep Antarctic ice core drillings demonstrate that prehistoric surges in atmospheric methane levels preceded periods of rapid glacial retreat by approximately one hundred years. Therefore, rising atmospheric methane concentration must have been the direct causal catalyst of those deglaciation events.Concludes that one phenomenon caused another based solely on a chronological sequence, failing to account for alternative common causes.
- Portfolio Director: Every individual startup enterprise admitted into our clean-energy venture fund has maintained an impeccable solvency profile with zero debt obligations. Consequently, our clean-energy venture fund as an entire portfolio is guaranteed to be entirely immune to systemic financial risk.Infers that a collective whole possesses a specific trait simply because each of its constituent components possesses that trait.
- Medical Researcher: Securing formal approval from the Institutional Review Board is strictly required before any novel oncological therapy can be administered to clinical trial volunteers. Because our immunotherapy protocol has now secured complete Review Board authorization, we are guaranteed to commence human patient dosing immediately.Treats a prerequisite condition that must be satisfied for an event to occur as if it were sufficient to guarantee the event's occurrence.
Answer
The argument concerning prehistoric methane and glacial retreat matches the description of inferring causation from chronological sequence. The argument concerning the clean-energy fund matches the description of attributing the properties of individual parts to an entire collective. The argument concerning oncological therapy approval matches the description of treating a necessary condition as a sufficient condition.
Each pair correctly matches an argument with its defining logical flaw: the glaciological argument commits a post hoc causal error by assuming temporal sequence proves causation; the investment argument commits an error of composition by generalizing individual asset solvency to total fund risk immunity; and the clinical trial argument commits a conditional logic error by mistaking a necessary regulatory checkpoint for a sufficient condition that guarantees trial initiation.
Step-by-Step Solution
Key Concept
Flaw in the Reasoning: Structural Identification of Logical Vulnerabilities
Estimated Time:1m 30s