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Single Idea 13242

[from 'Logical Pluralism' by JC Beall / G Restall, in 4. Formal Logic / E. Nonclassical Logics / 5. Relevant Logic ]

Full Idea

The argument from P to A is 'relevantly' valid if and only if, for every situation in which each premise in P is true, so is A.

Gist of Idea

It's 'relevantly' valid if all those situations make it true

Source

JC Beall / G Restall (Logical Pluralism [2006], 5.2)

Book Reference

Beall,J/Restall,G: 'Logical Pluralism' [OUP 2006], p.53


A Reaction

I like the idea that proper inference should have an element of relevance to it. A falsehood may allow all sorts of things, without actually implying them. 'Situations' sound promising here.