Questions tagged [truth]

Theories of truth deal with questions such as: what are truths? what makes them true? what is the relation between truths and the things that makes them true? Not to be confused with "what is the truth", which is a completely different matter.

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Can True(X) be completely defined as Provable(X) for some X? [closed]

This following seems to provide a concrete example that fulfills my updated question: This defined subset of finite strings only specify the arithmetic operation of addition "+" and the Boolean ...
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Why do I accept some inconsequential claims as “obviously true” without evidence? E.g. “Most people don't like to be hit on the head with a hammer.”

There are certain claims that I accept as obviously true without (much) evidence. For example: Most people don't like to be hit on the head with a hammer. Donald Trump ate dinner some time last week....
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Do philosophers think beliefs are bearers of truth-value?

In the literature about what sorts of things have a truth-value, the idea that acts of belief bear truth-value seems present, yet uncommon. On the other hand, objects of belief like propositions or ...
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Citation regarding a quote having to do with “truth” and what “an animal needs to believe”

I'm trying to run down a quote from (I think) Hegel which I read several years ago and have not been able to find since. The gist of it is this... "What an animal, for the sake of its own survival,...
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Excluded middle versus bivalence [duplicate]

In logic, the law of excluded middle (or the principle of excluded middle) states that for any proposition, either that proposition is true or its negation is true. This principle should not be ...
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When is it meaningful to say that an undecided conjecture is true or false?

I see that other questions have already been asked about mathematical truth but here I want to ask clarifications on a particular perspective. One can think the answer to the question could be "when ...
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Is it possible to determine if one's perceptions and logic are valid?

Let's say, for the sake of argument, that I live in a world divided into tribes with strongly-differing views. My tribe says that many of our opponent's values are immoral and much of their leadership ...
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Plato's method for reaching the truth?

I wonder about Plato and, in particular, about his method of reaching the truth. One can suppose that the method is based on the practice of his dualistic philosophy, which would aim to free the soul ...
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Truth values of sentences

Frege proposed that the meaning of a sentence is its truth value in "Über Sinn und Bedeutung" (close to "On Sense and Meaning"). This is not correct because some (many) English sentences do not have ...
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Do we have a right to know some things?

Do we have a right to know some things? Obviously you don't have a moral right to know what I had for breakfast today -- though you might be able to find out [it was pizza]. And we have a right to ...
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The truth of statements which do not capture everything about the object [closed]

Logically it could be true to say: "All human beings are mortal (and therefore Peter is mortal because Peter is a human being)." But the above statement could be false in a sense, because mortality ...
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Did any philosopher promote a “pure” pragmatic conception of truth?

William James often associated truth with usefulness (utility), but overall his conception of truth was not pure in this regard. It shares some elements of the correspondence and coherence theory. For ...
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Is there consensus on the framework of truth one should use when talking about moral statements?

My understanding is that for a moral realist, moral statements are propositions that have a true/false property that can guide reasoning. However, most articles I have read do not talk about what ...
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Did medieval philosophers believe that Truth is causally active?

From the modern standpoint, truth is about propositions or beliefs. Getting true beliefs is not something that just comes to us by itself; evidence has to be gathered by us, we have to reason, ...
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The future in the deflationary theory of truth

How does the deflationary theory of truth, which defines true and false in the following straightforward way The proposition that p is true iff p. The proposition that p is false iff p is not ...
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Is it ethical to research potentially harmful topics? [closed]

Some truths are very unpleasant. Some fields may even be unpleasant to research, because the researcher may wind up discovering something very disconcerting about the world. Should we investigate ...
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Does every truth have to be provable based on evidence?

I know the answer is "no" in general due to Gödel's Theory of Incompleteness, but I mean this question in a more real-world sense (i.e. scientific sense). In other words, I am talking about empirical ...
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Ramifications of a world of unrestrained truth [duplicate]

Are there any papers/books/studies on the ramifications of a theoretical world of unrestrained truth, meaning no secrets? A part of the motivation for this question is the fictional show, Code Geass, ...
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Is it possible to prove that a particular statement cannot be disproved without creating a contradiction?

In the following link (http://www.importanceofphilosophy.com/Metaphysics_ExistenceExists.html) the authors are basically arguing that there are statements that we cannot deny without contradicting ...
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A Paradox for Anti-Realism?

Semantic Anti-Realists hold that a claim has a (constructive) proof if the claim is true. I wonder whether this position runs into a version of Yablo's supposedly non-circular version of the liar ...
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What does it mean for a statement if we cannot disprove it?

In the following link (http://www.importanceofphilosophy.com/Metaphysics_ExistenceExists.html) the authors are basically arguing that there exists some truth that we cannot disprove by any other ...
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How do we call a statement that is unthinkable for any person to not be the case? [duplicate]

The example of such an unthinkable or unimaginable thing for a person could be non-existence, therefore argument against existence seems to be so absurd. Aren't we calling such things axioms or ...
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Do we have a name for the following axiom?: We can never know for sure whether we know everything that exists

Let's assume that our words and sentences are able to describe the truth. It is clear that whatever we know - even if we have knowledge about an entire universe and every position and momentum of its ...
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Noam Chomsky vs 9/11 Truth movement. Is Noam's Logic legit?

When Noam Chomsky was asked about what he thought about the collapse of building 7 at the University of Florida in 2013, he replied that only a minuscule part of the scientific community backed up the ...
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Ref request: Reality objective or subjective

This is a request for a reference on (within) philosophy.stackexchange.com. It follows from discussions around this question. I am asking after having tried my luck at websearch. What I am searching ...
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Is every sentence we write or utter either true or false? [closed]

Please read the complete description before putting any answer / comment, Thank you. I've been just thinking through this question which I can frame it like this: Can I write or utter any sentence ...
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Is mathematics truth?

In mathematics there are imaginary numbers which cannot be represented directly in reality (the physical world). For example, you can't have i apples where i = √-1 (square root of -1) Can we ...
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Scientific truth vs. mathematical truth

It is said that in the real world nothing can be proven to be absolutely true because there is always a way for a statement to be disproved by a counterargument. For example, a person "A" could say ...
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Is it true in some sense that the only “truth” people are capable of knowing is the “truth” that they assume to be true?

What are some viewpoints on the following assertion in philosophy and logic? Anything people argue to be true is only their assertion based on some axioms or premises which they assume to be true (...
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Doubt about the possibility of knowing someone is actually saying the truth [closed]

Except for a few cases in which you can have proof someone is saying the truth, can you actually ever know if someone is being honest when they say things like "I love you", "this is nice" or "you ...
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What are the differences between conditional and relative truths?

I thought they meant the same thing, but after asking about it in a philosophical forum, I was told they are different, but how so? Are there universal meanings attributed to "conditional truth" and ...
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What is the difference between Adorno's 'fragmentation' and post-modern art's fragmentation?

the most authentic art is modernist art which reflects in its own fragmentation the fragmentation of society. What is the difference between Adorno's 'fragmentation' and post-modern art's ...
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Language confusion; necessary/nomological/true in all worlds

I got confused by the way different people use language in the context of physicalism. In particular, Kripke seems to equate "necessary truths" with something that is true in all possible worlds. Is ...
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How is Wittgenstein’s “notorious paragraph” about the Gödel's Theorem not obviously correct?

Timm Lampert quotes from Wittgenstein's "notorious paragraph" (§8 of Remarks on the Foundations of Mathematics, Appendix 3) in http://wab.uib.no/agora/tools/alws/collection-6-issue-1-article-6....
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Circularity between truth and meaning?

These two common claims are equally appealing: (1) the meaning of a ( declarative) sentence consists in its truth conditions (2) the truth of a sentence depends on its meaning But are we moving ...
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What are the identity conditions for “ a truth” [closed]

Here I'm not talking about "truth" in general ( as when one says " truth is correspondence between thought and reality") but about truth considered as a particular truth, as when one says " this ...
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Are there recent coherence theory of truth for mathematical truths?

Are there any recent works (papers, books, etc) in philosophy of mathematics where it is given an account of mathematical truth in terms of a coherence theory of mathematical truth? I am interested ...
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Has any consensualists written on Wittgenstein?

"This was our paradox: no course of action could be determined by a rule, because any course of action can be made out to accord with the rule" - Wittgenstein This paradox is purported to call ...
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What is the division of philosophical doctrines with respect to absoluteness/relativity of truth?

Right now I am listening to a talk on youtube which starts with the declaration "of course we all know truth is a relative notion". There are certainly some directions in philosophy which accept this ...
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Should truth entail possible truth?

It is a well-accepted axiom of modal logic that truth implies possible truth. Is there any philosophical argument against this conclusion? In other words, should truth entail possible truth?
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What's the role of certainty in discussions about philosophical positions?

Karl Popper was one of the twentieth century’s preeminent philosophers of science. He was an avowed realist who was dedicated to the correspondence theory of truth. In his seventh decade of life, ...
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Is fallibilism a better option than absolute certainty?

Fallibilism is the epistemological thesis that no belief (theory, view, thesis, and so on) can ever be rationally supported or justified in a conclusive way. Always, there remains a possible doubt as ...
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What is the connection between objective uncertainty and truth as subjectivity in Kierkegaard?

I just want to understand clearly what is the possible connection between the objective uncertainty and the truth as subjectivity of Soren Kierkegaard. Since we cannot find much in his books his ...
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How can we be certain that we cannot be certain?

I read a lot about people saying that it is impossible to be certain about anything with 100% certainty, but that means that this rule in and of itself must be true 100%. I mean the rule that "we ...
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Frege: Truth as an expression of assertoric force

I am writing an essay on Frege's redundancy theory of truth. As far as I have read, his theory is that the word 'true' does not add anything to the thought of a sentence in which it appears, however, ...
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Did any philosopher make the claim that mathematics can be as illusory as visual information?

The Greeks postulated that the world we observe may be just an illusion and Kant based some of his philosophy on that very idea. From that idea, came the idea that mathematical truths are more certain ...
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What are some philosophical arguments that explain why mathematics allow us to reach a greater truth than empirical evidences?

Is it really the case? Was there a proof of sort that shows mathematical facts are more certain than empirical facts? What are the arguments for and against that claim?
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Is there any philosophy that associates the absolute truth with monism?

I never know what people mean by absolute truth, it sounds like they're referring to a truth above all truths, but there are many truths. So I was wondering if there were a lot of philosophy that ...
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Why should I trust experts - and what's the place of experts in a democracy?

If we trust experts, do we then elevate them as determiners of the truth? When we trust our surgeon to do a good job in surgery because he is an expert, do I forfeit my right to criticize experts on ...
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Did Nietzsche violate Christian morality in his life? Was he urging anyone to do so? [closed]

Did Nietzsche violate Christian morality in his life, in his behaviour? Was he urging anyone to do so? He seems to have had a long standing grudge against it.

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