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95 votes

Why do some people care so much about "empirical truth"?

Neither Harris nor Hitchens dismiss or ridicule non-empirical philosophy itself. Harris, in particular, calls himself a philosopher and studies Eastern religions and similar traditions. What they ...
Lee Daniel Crocker's user avatar
58 votes

What is the difference (if any) between "not true" and "false"?

"p is false" implies "p is not true", but not vice verse because p can also be nonsense. "2 + 2 = 5" is both false and not true. "2 + 2 > red" is neither true nor false because it is nonsense. If ...
George Chen's user avatar
  • 2,208
57 votes
Accepted

Is "This sentence is written in English" nonsense?

"This sentence" is an indexical term. An indexical is a term like "I", "today", or "this city" where the reference of the term depends on the context of the ...
David Gudeman's user avatar
35 votes

Is mathematics truth? As in the sense of that which is manifest or possible in reality?

Ill formed question. Mathematics (specifically, logics) define what truth is. You are trying to test the validity of the tool with the tool itself. The answer would be a plain "yes". Otherwise (if you ...
RodolfoAP's user avatar
  • 7,106
33 votes

Is every sentence we write or utter either true or false?

Various candidates would be: self-referential sentences such as "This sentence is false." opinion-based sentences such as "Chocolate is the most delicious ice cream flavor." sentences where the ...
present's user avatar
  • 2,500
25 votes
Accepted

Does every truth have to be provable based on evidence?

The answer is a point of contention between realism and anti-realism. Truths that "do not have evidence" are termed verification-transcendent truths (coined by Dummett), and realists are committed to ...
Conifold's user avatar
  • 42.8k
22 votes

Is mathematics truth? As in the sense of that which is manifest or possible in reality?

I think it is a mistake to assume that there exists something like a context-independent notion of truth. Let me explain what I mean with the context dependence of truth. Consider the following ...
celtschk's user avatar
  • 1,521
18 votes

If philosophy is based on reason and rationality, then why is there so much disagreement?

The short version is that argumentation requires premises and inferences to get to conclusions. Even if philosophers agree on a systematic approach to inference, let's call such agreement logic, the ...
J D's user avatar
  • 24.9k
17 votes

Why do some people care so much about "empirical truth"?

I agree with the comment of @Philip Klöcking concerning the success story of empiricism in science. Apparently philosophy is not based on experience, in particular it is not based on observation. But ...
Jo Wehler's user avatar
  • 28.3k
17 votes

Why do some people care so much about "empirical truth"?

It is not just that empiricism works, and in 300 years has brought us from semaphore lines to global high speed interconnects, or that non-empiricism is a fervent breeding ground for falsehoods and ...
Veedrac's user avatar
  • 399
16 votes

What is the difference (if any) between "not true" and "false"?

In the classical logic something is neither true nor false if it is grammatically malformed to have a truth value, so 2+5 or "x is blue" are not "true", but not "false" either, they are not truth-apt. ...
Conifold's user avatar
  • 42.8k
16 votes

Is mathematics truth? As in the sense of that which is manifest or possible in reality?

Despite some claims, the Cartesian myth that math is independent of physical reality is arguably false. Mathematics is NOT independent of the physical systems which embody it. Physical systems are ...
J D's user avatar
  • 24.9k
16 votes

Is every sentence we write or utter either true or false?

The OP asks the following: Can I write or utter any sentence which is neither false nor true? Yes. An example would be Tomorrow I will rise at precisely 6 am. That sentence today is neither true nor ...
Frank Hubeny's user avatar
  • 19.3k
15 votes
Accepted

Can axioms be false?

It depends. An axiom is a starting point or foundation for reasoning. The term has been used in different ways historically. It used to mean a proposition that is self-evidently true, or at least so ...
Bumble's user avatar
  • 24.1k
14 votes

Is mathematics truth? As in the sense of that which is manifest or possible in reality?

tl;dr: Yes to pragmatists; no to everybody else: For them, mathematics is about correctness, not about truth. While it is true that mathematics obviously was — and, perhaps less obviously, ...
Peter - Reinstate Monica's user avatar
14 votes

Is "This sentence is written in English" nonsense?

This sentence is written in english. Cette phrase est écrite en anglais. These are different sentences; they have different words to each other. An accurate translation of the first sentence into ...
wizzwizz4's user avatar
  • 2,092
14 votes

If philosophy is based on reason and rationality, then why is there so much disagreement?

It has been said man is a rational animal. All my life I have tried to find evidence that could support this. Bertrand Russell While in the above, Russell takes aim at logic and the rational, he didn'...
Rushi's user avatar
  • 2,064
13 votes

Is there a difference between believing something and behaving as if it were true?

Is there a difference between believing something and behaving as if it were true? Yes, and the distinction is recognized in epistemic terminology. Truth that is actually or really true is generally ...
J D's user avatar
  • 24.9k
12 votes

Why is belief necessary for justified true belief?

Your (1) and (2) are not enough. Here is an example: suppose I have excellent reasons to believe that the earth is round (I've seen photos, listened to lectures, etc.), and that it is in fact true ...
E...'s user avatar
  • 6,466
12 votes

Is every sentence we write or utter either true or false?

Is every sentence we write or utter either true or false? NO. A sentence is "a textual unit consisting of one or more words that are grammatically linked. [... The] words [are] grouped meaningfully ...
Mauro ALLEGRANZA's user avatar
12 votes

Is to be able to describe something to be able to judge that it's true or not?

I think your questions seem to have the common denominator of trying to apply the straitjacket of logic to everyday speech. When we say 'unicorns have four legs' it is an idiomatic shorthand for ...
Marco Ocram's user avatar
  • 17.8k
11 votes
Accepted

Is there a way to avoid Gödel's incompleteness affecting mathematics as a whole?

It is a natural idea, but unfortunately the answer is no, it is not feasible. The root of incompleteness is not numbers, but the possibility of (implicit) self-reference, arithmetic is just the ...
Conifold's user avatar
  • 42.8k
11 votes

How is Wittgenstein’s “notorious paragraph” about the Gödel's Theorem not obviously correct?

Timm Lampert, cited by the OP, quotes Wittgenstein (§8 of Remarks on the Foundations of Mathematics, Appendix 3): ‘True in Russell’s system’ means, as was said: proved in Russell’s system; and ‘...
Frank Hubeny's user avatar
  • 19.3k
10 votes

Is finding truth possible?

You've stumbled upon an old problem in philosophy, The Paradox of Inquiry, first formulated in Plato's Meno. The problem can be reformulated as follows: Either you know the answer to a question, or ...
E...'s user avatar
  • 6,466
10 votes

Is mathematics truth? As in the sense of that which is manifest or possible in reality?

“You can’t have i apples” As @Conifold points out you cannot even have √2 apples. I'd go further. Can you have -2 apples ⅓ apples? I'd say (from a certain pov) no. All physics is based on ...
Rushi's user avatar
  • 2,064
10 votes
Accepted

Is it consistent to say "X is possible but false"?

Well, in English you would use the subjunctive tense and say, "possibly I could have had a cat in my room, but in fact I do not." That's a reasonable statement to make. "I could have ...
causative's user avatar
  • 11.8k
8 votes

Why is belief necessary for justified true belief?

According to Eric Schwitzgebel, Contemporary analytic philosophers of mind generally use the term “belief” to refer to the attitude we have, roughly, whenever we take something to be the case or ...
Frank Hubeny's user avatar
  • 19.3k
8 votes
Accepted

How to disprove "I'm entitled to my opinion"

Welcome to this SE, Daniel. I think the problem with the argument is what you are trying to prove: how can I disprove that there exists an inherent privilege (an entitlement) to believe whatever ...
Frank Hubeny's user avatar
  • 19.3k
8 votes

Should truth entail possible truth?

If we're talking about metaphysical possibility, then normally yes. If you reject the claim that "if P then possibly P", you must also reject the claim that "if necessarily P then P". Proof: suppose ...
Adam Sharpe's user avatar
  • 3,804

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