Match each of the following arguments to the abstract characterization that accurately describes its logical structure or underlying defect:
- Astrophysicist: Any planetary body capable of sustaining a permanent liquid ocean must possess an active internal magnetic dynamo. High-resolution magnetospheric data confirm that exoplanet Gliese-667 maintains an active internal magnetic dynamo. Therefore, Gliese-667 must be capable of sustaining a permanent liquid ocean.Inferring that a sufficient condition is satisfied based solely on evidence that an indispensable requirement has been met.
- Cybersecurity Analyst: If a financial network deploys automated real-time transaction auditing, it will prevent systemic unauthorized ledger manipulation. Apex Bancorp has refused to deploy automated real-time transaction auditing. Consequently, Apex Bancorp cannot prevent systemic unauthorized ledger manipulation.Concluding that an outcome cannot be realized simply because one particular sufficient condition for that outcome has not occurred.
- Paleoecologist: Most verified lacustrine sediment cores from the late Pleistocene contain fossilized diatom assemblages. Most lacustrine sediment cores containing fossilized diatom assemblages also exhibit volcanic ash micro-layers. It follows that at least some lacustrine sediment cores from the late Pleistocene exhibit volcanic ash micro-layers.Assuming that two overlapping majority relationships involving a common category guarantee that the two non-shared categories intersect.
- Deep-Sea Biologist: A benthic hydrothermal vent field can support endemic vestimentiferan tubeworms only if ambient dissolved sulfide concentrations exceed critical metabolic thresholds. In-situ spectrophotometry reveals that ambient dissolved sulfide concentrations at the Kolumbo volcanic crater fall well below critical thresholds. Thus, the Kolumbo crater cannot support endemic vestimentiferan tubeworms.Validly inferring that a state of affairs does not obtain by establishing that a condition necessary for that state of affairs is absent.
Cevap
The astrophysicist's argument corresponds to inferring that a sufficient condition is satisfied based solely on evidence that an indispensable requirement has been met; the cybersecurity analyst's argument corresponds to concluding that an outcome cannot be realized simply because one particular sufficient condition has not occurred; the paleoecologist's argument corresponds to assuming that two overlapping majority relationships involving a common category guarantee that the two non-shared categories intersect; and the deep-sea biologist's argument corresponds to validly inferring that a state of affairs does not obtain by establishing that a condition necessary for that state of affairs is absent.
Each argument maps cleanly to its underlying logical framework: The planetary argument commits the error of affirming the consequent (mistaking a required condition for a sufficient trigger). The cybersecurity argument commits the error of denying the antecedent (mistaking one possible trigger for an exclusive requirement). The paleoecology argument illustrates the quantifier fallacy of chaining two majority claims across non-identical subject classes. The marine biology argument represents a valid deductive Modus Tollens inference.
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Anahtar Kavram
Parallel Reasoning, Quantifier Syllogisms, and Formal Fallacies (Affirming the Consequent, Denying the Antecedent, False Transitivity)
Tahmini Süre:2m 30s