Although it can have a variety of meanings in philosophy, truth generally refers to conformity with fact or reality.

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How is Islam (as either philosophy or religion) relevant to any stage or place in general history especially to our own? [on hold]

Having insight and understanding regarding this question Thomas Aquinas wrote: Muhammad seduced the people by promises of carnal pleasure to which the concupiscence of the flesh goads us. His ...
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41 views

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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91 views

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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33 views

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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144 views

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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93 views

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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88 views

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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157 views

How can anyone justify conspiracy theories / scietific 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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48 views

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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39 views

Pessimism of strength and weakness

2nday source on these terms say: they essential concern the character of their advocates rather than the content of their doctrine It is well known that Nietzsche called probity or honesty the ...
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51 views

Why Bad Things (Habits/Pessimism) prevails automatically,But Good Things(Optimism) wont be adhered even if induced? [closed]

Good Habits are not adhered to our routines even if practised where as Bad Habits are too much attractive implicitly without any effort. Why? Here, Please dont simply Divide Good & Bad Habits are ...
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259 views

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 ...
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33 views

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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1answer
67 views

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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1answer
109 views

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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3answers
184 views

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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3answers
180 views

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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1answer
87 views

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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124 views

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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1answer
66 views

In postmodernism, is reason and logic an “absolute truth” to be jettisoned? [closed]

I'm interested in but not educated in philosophy. I was having a discussion with an acquaintance who considers himself a postmodernist philosopher. In our discussion, it became clear that, in his ...
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268 views

Tarski's truth definition

I am a Math student currently taking my Master's Degree, and last semester I took a course on Mathematical Logic (an introductory one). One of the subjects we covered there was (of course!) Tarski's ...
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2answers
196 views

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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1answer
110 views

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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2answers
96 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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1answer
616 views

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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1answer
99 views

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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82 views

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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4answers
92 views

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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105 views

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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141 views

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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804 views

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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3answers
147 views

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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5answers
161 views

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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66 views

Perception and truth

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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43 views

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 ...
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1answer
140 views

what is the practical use of Tarski's Convention T?

In software engineering one often starts with defining principles, standards and guidelines that programmers should stick to and apply in their products. There comes a moment when one has to evaluate ...
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1answer
151 views

Fodor, Compositionality and the Liar

In defense of his Language of Thought Hypothesis (SEP article), Jerry Fodor argues that Thought is recursively compositional in just the same way that Language is. When we understand a sentence, we ...
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6answers
23k views

What is the difference between Fact and Truth?

I'm curious about the difference between Fact and Truth. I was searching on the internet if I could find it. But still I'm confused about the exact meaning. I first read the forum discussion here Fact ...
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1answer
204 views

Important differences between Tarski's 1933 and 1956 truth definitions

The paper "The Seven Virtues of Simple Type Theory" mentions that it uses the same trick (due to Tarski) to define the semantics that is also used by first-order logic. I interpreted this a reference ...
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107 views

What is the essential something that Heidegger suggests that philosophers can learn from poetry?

In this transcript of a conversation between Simon Critchley & Badiou on Badiou's book Being and Event, Badiou states: And after that, I have also to understand why there is in modern times a ...
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322 views

The difference between soundness and completeness

Is anyone able to articulate the difference between the properties of soundness and completeness insofar as they relate to the validity of the tree test?
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779 views

What makes Humans different from a chemical computer?

Are we all robots? Is our DNA the 0's and 1's of computer code? Are we an advanced computer system, with instead of keyboard and mouse input... input from our senses. Our database being our brain ...
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220 views

What are the methods to evaluate a supernatural statement as carefully as possible?

I've found out that it is hard to evaluate the truth of a statement which has following 5 properties: They concern events in the future. They are so supernatural, to the point of being outside of ...
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1answer
216 views

A simple paradox of True or False [duplicate]

In a piece of paper, it was written: The statement written in the paper is false. Is that statement actually true or false?
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156 views

How do correspondence theories handle statements like these?

I have a number of true statements. Each of these statements is a case where I have difficulty seeing how (assuming physicalism) the statement could correspond to a state of affairs. My question is: ...
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363 views

Was Karl Popper a “dedicated opponent of all forms of scepticism”? If so, why, or how?

While reading the Wikipedia article on Karl Popper, I was surprised to find that one of the article's sources, in its lede paragraph, claims that Karl Popper was a "dedicated opponent of all forms of ...
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9answers
700 views

Is scientism a self defeating epistemology?

Some who have argued against the validity of scientism have argued that the view that only science can uncover truth is not a scientific discovery but rather a epistemology. Hence it has been claimed ...
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203 views

Is Truth the Primary Epistemic Goal?

There is broad agreement that knowledge is more than just true belief. What, though, must be added to true belief to get knowledge? According to traditional epistemology, two more ingredients are ...
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713 views

How does Logic define “true” and “false”?

"Truth", "Falsehood" are pretty axiomatic expressions, but even axioms need to be defined in common language terms. What are the "official" definitions of these in Informal logic, Formal logic, ...
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How do quantifiers work in predicate logic?

Predicate logic is somewhat like propositional logic, except that where propositional logic only works on the level of whole sentences (e.g. A = "Socrates is mortal", B = "All ...