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Questions tagged [dialetheism]

Dialetheism is the view that there are true contradictions.

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Liar's paradox, dialethism and law of excluded-middle [duplicate]

I've been reading about liar's paradox and its responses. I like Graham Priest, fantastic philospher and proponent of dialethism. Graham argues that liar's paradox is solved by claiming that statement:...
Dario Mirić's user avatar
7 votes
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Why can't the dialetheist say that the Curry sentence is both true and false?

In the SEP article for dialetheism, it is said that A dialetheist, though, cannot simply accept that the Curry sentence is both true and false, because if it is true then ⊥ follows. Dialetheists need ...
confusedcius's user avatar
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Has anyone recast Aristotle's Law of Noncontradiction as a law of recontextualization?

Aristotle's Law of Noncontradiction (LNC) is translated in a variety of ways: Let us next state what this principle is."It is impossible for the same attribute at once to belong and not to ...
Nick Gall's user avatar
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Do contradictions rule out holism and vice versa, and pluralism?

Quine has a holism (based in radical empiricism) that is very appealing. It's a significant part of his Two Dogmas of Empiricism, which many say is the most significant philosophical work in the 20th ...
J Kusin's user avatar
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Why shouldn’t I be a skeptic about the Necessitation Rule for alethic modal logics?

Alethic modal logics for metaphysical possibility and necessity usually have the Necessitation Rule: From ⊢P, infer ⊢□P. Doesn’t this commit us to the meta-notion that logical necessity modulo some ...
PW_246's user avatar
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When does a conditional statement hold true according to Dialetheists?

I understand that for the consequent to really follow from the antecedent, it (the consequent) must be both relevant and necessary given the antecedent. So my question is: which types of conditional ...
help-me's user avatar
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Is there a rule/s for determining whether a contradiciton is a Dialetheia?

If not, is there a set of accepted properties or qualities that dialetheic statements have?
help-me's user avatar
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Dialethic machines and incompatibilist free will

Preamble: although I believe in the LNC for Aristotelian/Quinean reasons and the argument from explosions to boot, and am not altogether adept at modal logic in general, much less counterpossible ...
Kristian Berry's user avatar
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The absorption of parathetic sentences into the One True Fact

Two assumptions At least "hypothetically" or "for the sake of argument," I would like to use the slingshot argument to compare and contrast various sentence-types. So for now, ...
Kristian Berry's user avatar
3 votes
3 answers
550 views

Is there a difference between contradictory and the opposite?

Is there a difference between contradictory and the opposite? In natural language, we have the idea of opposite such as 'The opposite of good is evil'. In logic, we can represent that symbolically. ...
Axz's user avatar
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? as a logical connective

I am reading Doubt Truth to be a Liar by Graham Priest. In it he uses the symbol ? as a logical connective, and I am unsure of it's meaning. Given his use of ? (a ? a) to denote the Law of Identity, ...
melembroucarlitos's user avatar
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Reference needed: why is the Liar Paradox regarded as not important/fringe by some?

Most people, when first encountering the Liar Paradox, react in one of two ways. One reaction is not to take the Paradox seriously and say they will not reason any more about it. - Dowden, IEP article ...
Constantly confused's user avatar
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1 answer
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What is the exact form of law of non-contradiction that dialetheism rejects?

Dialetheism asserts that there are sentences that are both true and false, e.g. the Liar. This seems to, quite obviously, go against the law of non-contradiction (LNC), and indeed Priest seems to ...
Constantly confused's user avatar
1 vote
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Semantic rules overdetermine the truth value of Liar Paradox

I am reading Graham Priest's In Contradiction (p.14) and he mentioned that the semantic rules of 'this sentence' and 'is True' overdetermine and underdetermine the Liar Paradox and its counterpart ...
Constantly confused's user avatar
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Arguing that English does not satisfy the Tarski condition by appealing to truth value gap

I am reading Graham Priest's In Contradiction (P.12), where he is asserting that English satisfies the Tarski condition (a variant of semantic closure) and thus contains true contradiction. He ...
Constantly confused's user avatar
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Did physicist Erwin Schrödinger propose that reality could have contradictions?

Did Schrödinger believe that contradictory or inconsistent things could exist in reality? Was Schrödinger some kind of dialetheist?
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Can Hegel's theory of logic be formalized?

For dialecticism, we have paraconsistent logic. Is it possible to formalize the logic of Hegel, other European philosophers' systems, or at least their arguments?
AnduinWilde's user avatar
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What paraconsistent logics are there?

Is there a non-dialetheist paraconsistent logic in which invalidating the law of non contradiction (someone is both stupid and not stupid and short ∃x(STUPID(x) ∧ ¬STUPID(x) ∧ SHORT(x))) in any ...
user avatar
2 votes
3 answers
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A philosophy of suspending disbelief. What is it called?

What do you call the following philosophy? On its own God doesn't exist. Imagination is essential for humans to thrive to their fullest potential. At specific times, imagination is so useful ...
user3280964's user avatar
2 votes
0 answers
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How to construct a proposition about God (which is not a thing, nor a non-thing)?

I am reading a paper right now by Andrey V. Smirnov, published in the journal Philosophy East and West, Vol. 43, No. 1 titled Nicholas of Cusa and Ibn Arabi: Two Philosophies of Mysticism. Both ...
LootHypothesis's user avatar
1 vote
1 answer
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Does many valued logic hold in unambiguous cases?

My understanding of many valued logic is that it is used in cases where an aspect of a proposition is vague or not well defined. The example Wikipedia gives is: 'This apple is red.' Upon ...
Kiah's user avatar
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2 answers
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Dialetheias in the absence of contraction/absorption?

One of the arguments given for dialetheism is that the paradoxes of self-reference, such as the Liar paradox and Russell's paradox, are most naturally regarded as dialetheias (both true and false). ...
Mike Shulman's user avatar
12 votes
5 answers
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Does Gödel's argument that minds are more powerful than computers have the inconsistency loophole?

In "Raatikainen, P., 2005, “On the Philosophical Relevance of Gödel's Incompleteness Theorems,” , the author argues that Penrose's and others use of Gödel's theorem as an argument against mechanism (...
Alexander S King's user avatar
8 votes
3 answers
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Which philosopher discusses simultaneously considering an opinion and its opposite?

I remember reading somewhere that philosophical thinking was about being able to simultaneously consider one opinion and its opposite, or something of the like. Where was that? I am pretty sure it was ...
Leo's user avatar
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In which text/paper was the concept of dialetheism first introduced as a serious position?

More or less the question title. My final-year logic course a few years back covered a number of non-classical logics (deontic, Kleene/Lukasiewicz multi-valued, etc.), however dialetheism was left as ...
DTR's user avatar
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12 answers
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Motivations for dialetheism?

At the request of the moderators, I've reformulated this question to change the emphasis of the question to something perhaps a little more broad-ranging: Question. What are the major modern ...
Niel de Beaudrap's user avatar