scholarly journals Fitch’s Paradox of Knowability and the Knower Paradox: Against a Proposed Dialetheist Unified Solution

2017 ◽  
Vol 73 (3-4) ◽  
pp. 1001-1020
Author(s):  
Ricardo Santos
Keyword(s):  
Fitch’S Paradox ◽  
Knower Paradox ◽  
Paradox Of Knowability

When Protagoras Made Aristotle His Fitch

2019 ◽  
Vol 1 (2) ◽  
pp. 171-191
Author(s):  
Ian McCready-Flora
Keyword(s):  
Fitch’S Paradox ◽  
Subsequent Chapter ◽  
Epistemic Theory ◽  
Paradox Of Knowability

While defending the principle of non-contradiction in Metaphysics 4, Aristotle argues that the Measure Doctrine of Protagoras is equivalent to the claim that all contradictions are true; given all appearances are true (as the Protagorean maintains), anytime people disagree we get a true contradiction. This argument seems clearly invalid: nothing guarantees that actual disagreement occurs over every matter of fact. The argument in fact works perfectly, I propose, because the Protagorean view falls prey to a version of Fitch's “paradox” of knowability. The proposed reading shows how Aristotle treats the Protagorean view at issue as an epistemic theory of truth distinct from the mere claim that all appearances are true (which other opponents put forward on different grounds) and reveals Aristotle's underlying concern with the modal collapse of possibility into actuality. The revised Protagorean view Aristotle confronts in a subsequent chapter is furthermore best understood as an attempt to avoid this Fitch-style result.

The Bishop’s Church: Berkeley’s Master Argument and the Paradox of Knowability

2021 ◽  
pp. 1-16
Author(s):  
Stephen Kearns
Keyword(s):  
Master Argument ◽  
Paradox Of Knowability

Abstract We can find in the passages that set out the Master Argument a precursor to the paradox of knowability. That paradox shows that if all truths are knowable, all truths are known. Similarly, Berkeley might be read as proposing that if all sensible objects are (distinctly) conceivable, then all sensible objects are conceived.

scholarly journals Truth, Demonstration and Knowledge. A Classical Solution to the Paradox of Knowability

2015 ◽  
Vol 30 (3) ◽  
pp. 365-392 ◽  
Author(s):  
Elia Zardini
Keyword(s):  
Classical Solution ◽  
Classical Logic ◽  
Knowability Principle ◽  
Paradox Of Knowability ◽  
Bhk Semantics

After introducing semantic anti-realism and the paradox of knowability, the paper offers a reconstruction of the anti-realist argument from the theory of understanding. The proposed reconstruction validates an unrestricted principle to the effect that truth requires the existence of a certain kind of “demonstration”. The paper shows that the principle fails to imply the problematic instances of the original unrestricted knowability principle but that the overall view still has unrestricted epistemic consequences. Appealing precisely to the paradox of knowability, the paper also argues, against BHK semantics, for the non-constructive character of the demonstrations envisaged by anti-realists, and contends that, in such a setting, one of the most natural arguments in favour of a revision of classical logic loses all its force.

What can we learn from the paradox of knowability?

Topoi ◽  
1994 ◽  
Vol 13 (2) ◽  
pp. 71-78 ◽  
Author(s):  
Cesare Cozzo
Keyword(s):  
Paradox Of Knowability

On a side effect of solving Fitch's paradox by typing knowledge

Analysis ◽  
2008 ◽  
Vol 68 (2) ◽  
pp. 114-120 ◽  
Author(s):  
V. Halbach
Keyword(s):  
Side Effect ◽  
Fitch’S Paradox

Conditionals, Paradox, and Probability

2021 ◽  
Keyword(s):  
Natural Language ◽  
Philosophical Logic ◽  
Natural Language Semantics ◽  
University Of Oxford ◽  
Language Semantics ◽  
Paradox Of Knowability ◽  
The University ◽  
And Linguistics

This is a volume of essays in philosophy and linguistics in tribute to Dorothy Edgington, the first woman to hold a chair in philosophy in the University of Oxford. The volume focuses on topics to which Edgington has made many important contributions including conditionals, vagueness, the paradox of knowability, and probability. The volume will be of interest to philosophers, linguists, and psychologists with an interest in philosophical logic, natural language semantics, and reasoning.

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