Legal reasoning requires mastery of deductive and inductive logic principles.

Evidence

All lawyers must understand basic concepts of deductive reasoning, especially the categorical and hypothetical syllogisms. They must understand inductive reasoning, with its twin facets of induced generalization and analogy. And they should have a mental blueprint on how to recognize formal and material fallacies. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 71

Categorization

• DEFINE: XREF names what this plausibly connects to; SEED sketches the article/essay angle.
• corroborated: 2 independent passages support this claim — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 71
• XREF: connects to: Common law adjudication cycles induction and deduction into new rules — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 168; The ability to study law depends on recognizing logical connections in cases — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 210; Legal reasoning employs both deductive and inductive processes iteratively. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 312 (+16 more)

Library Connections

• Deductive proof must rely on circular reasoning or endless chains #complicates (0.75) — Bertrand Russell, History of Western Philosophy, 963

Broader Connections

• Knowledge of logical canons enables the detection of misleading legal arguments #expands (0.85) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 97
• A legal principle emerges from a long line of decisions. #exemplifies (0.80) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 134
• Logical reasoning provides the foundation that prevents common law from becoming arbitrary fiat. #expands (0.80) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 122
• Directed verdicts require courts to decide if facts permit reasonable inferences #exemplifies (0.75) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 221
• Judicial decisions are governed by beliefs about facts and rules #expands (0.70) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 160
• Valid legal analogies depend on relevant similarities rather than case quantities #exemplifies (0.70) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 343
• Legal analogy argues from particular facts to particular consequences based on similarities #expands (0.60) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 547
• Legal analogy requires a theoretical basis rather than mere perception #expands (0.50) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 608
• Common law rules arise from comparing cases, not from tracing prior logic #contradicts (0.50) — Burton, Steven J, An Introduction to Law and Legal…, 222