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Logical and Epistemic Modality

By Khudairi, Hasen

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Book Id: WPLBN0100003141
Format Type: PDF (eBook)
File Size: 173.58 KB
Reproduction Date: 9/2/2018

Title: Logical and Epistemic Modality  
Author: Khudairi, Hasen
Language: English
Subject: Non Fiction, Philosophy
Collections: Authors Community, Philosophy
Publication Date:
Publisher: Gutenberg
Member Page: Hasen Khudairi


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Khudairi, H. (2018). Logical and Epistemic Modality. Retrieved from

This paper examines the interaction between the philosophy and psychology of concepts and the modal characterization of the deductive concept of logical validity. The concept of logical consequence on which I focus is model-theoretic, where the concept records the property of necessary truth-preservation from the premise of an argument to its conclusion, as well as the condition that, in the class of all possible worlds in which a premise is true, a consequent formula or succedent set of formulas is true, as well. Focusing on the case of logical necessity, I argue that the ability to account for the modal properties of concepts places a desideratum on the explanatory adequacy of theories of mental representation. I outline, then, five approaches to the nature of concepts pursued in philosophy and cognitive science, and argue that the above desideratum does not appear to be satisfiable by the candidate proposals. Given the limits of the foregoing, I appeal to a sixth approach -- namely, cognitivism about epistemic modality, which takes epistemic possibilities to be intensional functions in a language of thought -- and endeavor to demonstrate how the proposal can sufficiently account for the modal profile of the concept of logical consequence, and thus provide the resources necessary for a metamathematical analysis of the target notion in the setting of cognitive science.


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