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CANCELLED LTP Lecture with Daniel Cohnitz: How to adopt a logic

Thursday 19 March 2020
Past events 2020
P.J. Veth
Nonnensteeg 1-3
2311 VJ Leiden

The Leiden Theoretical Philosophy Colloquium Series is pleased to announce a lecture by

Daniel Cohnitz

How to adopt a logic


What is commonly referred to as the Adoption Problem is a challenge to the idea that the principles of logic can be rationally revised. The argument is based on a reconstruction of unpublished work by Saul Kripke. As the reconstruction has it, Kripke essentially extends the scope of William van Orman Quine’s regress argument against conventionalism to the possibility of adopting new logical principles. In this talk I want to discuss the scope of this challenge. Are all revisions of logic subject to the regress problem? If not, are there interesting cases of logical revisions that are subject to the regress problem? I will argue that both questions should be answered negatively. (The talk is based on joint work with Carlo Nicolai.)


Daniel Cohnitz (born in 1974) holds the chair for theoretical philosophy at Utrecht University since 2016. In 2005 he defended his dissertation on
 Thought Experiments in Philosophy (Gedankenexperimente in der Philosophie) at Düsseldorf. From 2006 to 2015 he was professor of theoretical philosophy at the University of Tartu in Estonia.

All are welcome!

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