Legal Syllogism
Updated 2026-08-13
INTRODUCTION
English translation pending.
CORE DEFINITION
The legal syllogism is the standard reconstruction of judicial reasoning: the major premise states the applicable legal rule, the minor premise states the facts found from the evidence, and the conclusion follows as the judgment. Subsumption, the step of deciding that the facts fall under the rule, carries most of the real difficulty. The model is analytical rather than a description of how judges actually reach decisions, and it requires a valid rule and proven facts.
SCAFFOLDING EFFECT
Reduce cognitive load
- Expose premises: write the rule and the facts separately so each can be challenged. - Test subsumption: check whether the proven facts really satisfy every element of the rule. - Find the jump: locate where a value judgment is presented as a necessary inference.
Anchor fast decisions
Deduction transfers truth from premises to conclusion, so an argument built this way can only be as good as its premises. Writing the rule and the facts as separate premises makes each one inspectable, which is why hidden assumptions and unsupported factual findings become visible. It also localizes disagreement: two parties can agree on the rule and still dispute subsumption, and the model shows exactly where that dispute sits.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Legal_syllogismverified
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