Dialogical Logic
Updated 2026-09-10
INTRODUCTION
English translation pending.
CORE DEFINITION
Dialogical logic is an approach that handles logic and argumentation on the basis of dialogue, with a tradition reaching back to ancient Greek dialectic, where a thesis was discussed by question and answer between opposed parties. Its modern form was established by Paul Lorenzen and Kuno Lorenz in the context of constructive mathematics and logic, and it defines validity through winning strategies.
SCAFFOLDING EFFECT
Reduce cognitive load
- Model argument: rewrite a claim and its rebuttals as rounds of attack and defense to see who is under more pressure. - Design strategy: find responses that win for a position no matter how the opponent replies. - Reread validity: decide whether an argument holds by whether a winning strategy exists rather than by a static model.
Anchor fast decisions
Dialogical logic rewrites the truth of a formula as the proponent having a strategy that wins whatever the opponent does. The two parties take turns asserting and attacking claims, and local rules determine who may attack which sentence and how to defend it. Validity is defined by the existence of a winning strategy rather than by a model, an interpretation that fits intuitionistic logic naturally.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- plato.stanford.eduhttps://plato.stanford.edu/entries/logic-dialogical/verified
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