Analogical reasoning infers additional properties from shared case similarities
Evidence
J. S. Mill reduced it to a formula: Two things resemble each other in one or more respects; a certain proposition is true of one; therefore it is true of the other.5 In legal analogies, we may have two cases which resemble each other in a great many properties, and we infer that some additional property in one will be found in the other. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 570
Categorization
- corroborated: 2 independent passages support this claim — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 570
- XREF: connects to: Treating shared class membership as complete identity causes invalid reasoning — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 848; Legal analogy argues from particular facts to particular consequences based on similarities — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 547; Inductive enumeration and legal analogy differ only in conclusion breadth — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 548 (+10 more)
Broader Connections
- Analogical reasoning fails when negative factual resemblances outweigh positive resemblances
#qualifies(0.70) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 593 - Valid legal analogies depend on relevant similarities rather than case quantities
#qualifies(0.60) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 343 - Common law rules arise from comparing cases, not from tracing prior logic
#exemplifies(0.60) — Burton, Steven J, An Introduction to Law and Legal…, 222 - Deductive legal analysis applies established characteristic propositions to new cases
#contradicts(0.50) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 680 - Reasoning requires recognizing real logical connections and relationships among facts
#expands(0.40) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 247 - The ability to study law depends on recognizing logical connections in cases
#expands(0.40) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 210