display all the ideas for this combination of texts
1 idea
11066 | Deduction is justified by the semantics of its metalanguage [Dummett, by Hanna] |
Full Idea: For Dummett the semantics of the metalanguage is the external and objective source of the justification of deduction. | |
From: report of Michael Dummett (The Justification of Deduction [1973]) by Robert Hanna - Rationality and Logic 3.4 | |
A reaction: This is offered as an answer to the Lewis Carroll problem that justifying deduction seems to need deduction, thus leading to a regress. [There is a reply to Dummett by Susan Haack] |