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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Are there necessary truths in physical theories, more or less strictly speaking?

There are such things as mathematically necessary truths: 1=1, say; and logically neccessary truths: the law of modus ponens, say. But can there be one in physics? In Lewis's plural worlds where ...
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Absolute Truth - Is there existence?

I restate the question in a simpler and more specific way; is there a proof or has a philosopher proved, that things can be absolute and observed by each in the same way? Are there like conserved ...
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Can correspondence and coherence views of truth be compatible?

If in the course of interacting with an external world, a person is creating a set of coherent knowledge about this world, then there should be a mapping between their beliefs and the external facts. ...
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Finding a clear difference between truth and fact [duplicate]

I have been starting back in school after a long hiatus. In one of my classes, a discussion of Truth began. The problem I have had is that no one seems to have a solid definition between the two. ...
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Is everything just an opinion?

I read some people don't believe in truth but do believe there is always a chance that x. I have a question about such thought. I recently heard an anecdote that says nobody can ever prove I ate ...
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Is it possible to prove the invalidity of logic without using logic?

Is it possible to validly invalidate logic without using logic? Mere assertion gives rise to the question, "How do you know?". At that point, you end up having to use logic to justify the thesis ...
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Do questions about the ultimate truth make sense? Are we capable of understanding the system in which we live? (Looking for directions/references)

I am recently reading a lot about topics like free will or consciousness. It seems that many philosophers are trying to argue about these concepts in an ultimate and final way, that means they are ...
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Fundamental Truths in Philosophy [duplicate]

Many years ago I took a philosophy class that covered Descartes. The teacher logically explained to us the "I think Therefore I am" over the course of a week. He also said that it was one of the ...
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Truth and actuality

J. Krishnamurti and Prof. David Bohm discuss the topic of truth and actuality (reality). They touch on reality however in my opinion and understanding don't clarify or define truth. For example, ...
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Truth Tables and Venn Diagrams: Prove Contingent statement are consistent [closed]

I am trying to prove how consistent statements can be contigent. The problem i am having how to use a truth table to prove this.
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Do malformed propositions have True/False values?

Many people are familiar with the malformed questions that, no matter which way they are answered, reflect poorly on the person to whom they were asked. For example: Have you stopped beating your ...
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Is truth inherent in honesty? [closed]

Is truth inherent in honesty? In other words, may we establish a correlation, an isomorphism if you will, a functor, perhaps a forgetful one? Between truth and honesty? Pardon me, this question is ...
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If all the premises of an argument are true, is the argument logically valid?

Where an argument is said to be logically valid "if and only if it is not possible for the premises to e true and the conclusion false". I know that the argument is indeed logically valid if all the ...
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An Argument for the Unity of Truth?

I was thinking about truth, and came up with an outline for an argument that there is only one truth. However, this is just an outline and it is flawed, so I'm hoping you can help me critique and fix ...
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752 views

What's the difference between true statements and real information? [closed]

In Sweden we have legislation about "Osant intygande" - "Untrue verification" e.g. false and fabricated Ph D diploma or similar "Oriktig uppgift" - "Not a real piece of information" e.g. registrering ...
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On the foundations of physics

Scientific theories in physics have to be validated by experiments. But experiments are to be interpreted in the context of scientific theories. Isn'it like a snake biting its own tail? For example, ...
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Truth in Aquinas metaphysics

From what I'm reading, Aquinas distinguished truth in two senses: Ontological truth: It's the adaptation(adequation ?) of the 'created being' to God's understanding, whereby it fulfils that for ...
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English Sentence to Logical Proposition Doubt

I am a newbie to Stack-Exchange and if there is any problem in my question -- I apologize beforehand . I was working my way through some Propositional Logic Questions in Discrete Maths by Rosen , ...
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Double arrow elimination

I know that P <=> Q becomes (p => q) ^ (q => p)using double arrow elimination but how about the following ? ~(P <=> Q) becoming ~(p => q) ^ ~(q => p) ? Also (~P <=> Q) ...
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Did Friedrich Nietzsche believe in “the truth”?

It is well known that Friedrich Nietzsche was very condemnatory of the objective truth, however, while analyzing his words, it is difficult to ascertain whether or not he believes in the truth at all. ...
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What if the tallest height is considered the most beautiful? [closed]

What if some people defined the tallest height is considered the most beautiful? Some philosopher claimed that the most beautiful human doesn't exist. Can there be any "most beautiful" human?
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How to prove the axiom is wrong?

The father of math (Euclid) wrote a book named Elements. The book is full of axioms and here are some of them I am interested in: Things equal to the same thing are also equal to one another. ...
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How did Aristotle or St. Thomas resolve the liar's paradox?

How did Aristotle or St. Thomas Aquinas (such as in one of his commentaries on Aristotle) resolve the liar's paradox?
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When is an opinion wrong and why exactly? [closed]

People say that it's not an opinion when it's verifiable, or backed with up conclusive facts. "Conclusive facts" are subjective though, and vary from testing. An example would be an argument over the ...
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How can anyone justify conspiracy theories / scientific skepticism

The number of conspiracy like theories is exponential. http://en.wikipedia.org/wiki/List_of_conspiracy_theories Here are the most famous. How many of these have achieved any tangible success ...
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Question regarding ethics of the human to the dog relationship

I'm in the process of treating an elderly diabetic dog(diabetes in dogs is manifested very closely to the one in humans) and constantly hitting the wall of ethics(in my view) regarding human-dog ...
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Roko's Basilisk as Descartes' evil genius?

I'll try to pose a shortened version of Roko's Basilisk below and then ask about how it relates to Descartes' evil genius: The idea is that down the line may it be decades or centuries from now, ...
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What are the implications of spreading stories that are fake solely because they support a opinion?

I see quite often on many social mediums, the radio, news, as well as advertisements everywhere statements that are untrue or are misleading that support certain opinions. I think it is completely ...
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Supervaluationism and Theories of Truth

How does the supervaluationalist defend his/her theory of truth since the correspondence theory of truth seems to presuppose bivalence? It would seem then that the only truth is Super-Truth. And, the ...
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Why is Tarski's semantic theory of truth formally correct and materially adequate?

In "The Semantic Conception of Truth and the Foundations of Semantics" (1944) Alfred Tarski asserts that a satisfactory definition of truth must be both formally correct and materially adequate. A ...
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Is there such a thing as a 'necessary truth'?

Wikipedia (note the redirect) defines 'necessary truth' as statements which "could not be untrue", and I assume that this is how the term is usually used. A search through the SEP shows that while ...
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Are mathematical statements necessary truths?

I apologize if a similar question has been asked here, but I haven't found it. Are mathematical statements necessary truths? By 'mathematical statements', I mean both mathematical axioms as well as ...
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The Truth-Falsehood Dichotomy and Logic

Some philosophers argue against truth bivalency, and say that not every statement must be true or false, but some statements can be untrue without being false, or truth-ambiguous, or both true and ...
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Could a scientific unification theory and scientific method itself be misleading?

I aspire to one day be a scientist (specifically an astrophysicist) and I have been reading up on many novels (like those of Asimov) which look into the development of humanity. I know that our ...
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Aren't rational thinkers falling a prey to a logical fallacy?

All rational thinkers would clearly know that in a series of arguments anything that appeals to faith would be considered a fallacy. Yet the rational process itself (the belief that arguments based ...
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What are the philosophical implications of Tarski's truth definition?

I am a Math student currently taking my Master's Degree, and last semester I took an introductory course on Mathematical Logic. One of the subjects we covered there was Tarski's truth definition; and ...
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Why do many people derive comfort from the belief in an objective reality?

Many people derive comfort from the idea that there is an objective reality, and that there are objective truths, independent of our own individual subjective perceptions. Why should this be so? Why ...
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Were we born to believe? [closed]

This is a controversial question and not one that necessarily implies a Super Natural intervention, but I am curious about your opinion. Many of you I would hope is aware of the fact that living our ...
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224 views

The Customer is not Always Right [closed]

This issue has always been a philosophic issue to me, sense I have worked at McDonalds for the last six years of my life. On minute one of my first day of training, I was told "the customer is always ...
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Truth is singular. Its “versions” are mistruths [closed]

In the beginning of the legendary movie called Cloud Atlas... Somni 541 is sitting in a room, and an "Archivist" comes in. The conversation starts... Archivist: On behalf of my Ministry and the ...
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What distinguishes logical necessity, logical consequence, logical truth, and tautology from one another?

The text I'm reading distinguishes logical necessity, logical consequence, logical truth, and tautology from one another; however it doesn't make their distinctions especially perspicuous. As far as ...
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On the Nature of Truth [closed]

I'm fairly new to philosophical readings- that is, I've only parsed through various textbooks of antiquity. My questions, regarding the nature of truth, is as follows: Is contemporary consensus ...
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Why do we celebrate made up stuff?

Time goes in one direction. It doesn't make sense for one to say "3 years go on this day...". Its not the same day. Change has occurred. We, this world, everything we know is in a different state (...
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Why do we tend towards discretizing things around and within us?

Why do we tend towards discretizing things around and within us? Do our senses (for space and time) fool us into this notion all the way into the need for discretizing abstractions themselves, e.g. An ...
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A non question pertaining to the the law of identity (axiom)

The Law of Identity states "That every thing is the same with itself and different from another." A is A and not ~A. This seems to assume a perspective which facilitates this conclusion (hence an ...
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In what sense are proofs just arguments that convince us, not arguments that establish truth?

In mathematics and logic, it seems that once a proof of some theorem is discovered, then it is taken to be "absolute truth" within the axiomatic system from which it was derived. My question is: are ...
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What is taken as truth in philosophy?

First and foremost I should say that I am not educated in Philosophy; I study Mathematics. Essentially, the job of a mathematician is to prove theorems by logical deduction from axioms, which are ...
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Is there a category for statements that are never true?

I studied logic and found no category for statements that are not impossible but never true (e.g. "The earth is flat.") to differ them from statements that could be true ("I'm wearing blue shoes.") or ...
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Perception and truth [closed]

This is an afterthought of a TEDx video I caught this week on moral philosophy and its links with truth: "Perception is truth." Consider the following situations: ...
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Do we have an understanding of the universe? [closed]

My question is if we as rational creatures have come to terms that the universe is huge, there are planets bigger than earth, and with the advance of string theory, have we as humans finally have a ...