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CAPNA

Claude Opus 5.5, 4 Nov. 2026

NLP and argumentation

The Comprehensive Assessment Procedure for Natural Argumentation (CAPNA), developed by Martin Hinton, is a method for judging whether an argument is good. The Periodic Table of Arguments says what kind of argument something is. CAPNA asks whether it works. Hinton and Jean Wagemans later combined the two, using an argument’s PTA type to decide which questions to ask of its reasoning.

Three aspects

CAPNA assesses an argument in three respects:

In the combined procedure, each kind of lever has its own questions about the reasoning. They resemble the traditional critical questions of argument schemes. An argument from analogy invites “is 𝑎 really like 𝑏 in the way that matters?”. An appeal to an expert invites “is this source an expert on this question?”.

In Quell

Critical questions are a natural fit for dialogue. When a player’s argument is weak, a character could answer with the critical question its type invites. A response that names the kind of weakness, without supplying the fix, would also make brute-force guessing less useful.

See also

References