R
rossum
Guest
It is a tautology, which is true but not very useful.Light is light. That is the truth.
Is light being light a truth?
rossum
It is a tautology, which is true but not very useful.Light is light. That is the truth.
Is light being light a truth?
Light is light, and that is as far as I personally am capable of claiming as a truth.
We are trying to establish that truth can be a noun.Quote:
Originally Posted by CatsAndDogs View Post
Light is light. That is the truth.
Is light being light a truth?
It is a tautology, which is true but not very useful.
No, a tautology is like saying that tomorrow I will either go to work or I will not. (In the topic of logic anyways.)It is a tautology, which is true but not very useful.
rossum
That assumes a two-valued Aristotelian logic. There are alternative logics such as a probabilistic logic or a four-valued Nagarjunian logic: yes, no, both, neither.No, a tautology is like saying that tomorrow I will either go to work or I will not. (In the topic of logic anyways.)
Thanks.I disagree with the “knowable” part. In order to know that an absolute truth is in fact absolute we need an absolute method to determine absolute from relative truth. In order to know that the method we use is absolutely correct (humans can be mistaken) we need a second method to check the first method and so on into an infinite regress.
There may well be an absolute truth, but we can never absolutely know that we have reached it. I tend to think of absolute truth as someting like an asymptote - we can approach extremely close to it be we never quite reach it.
rossum
That again, is an absolute statement.The quote also makes the point that since the human languages we use are not themselves absolute, anything we describe using those languages cannot itself be ultimate/absolute.
rossum
My apologies, I tend to work in dichotomies in using logic.That assumes a two-valued Aristotelian logic. There are alternative logics such as a probabilistic logic or a four-valued Nagarjunian logic: yes, no, both, neither.
A = A is a tautology in most (all?) logics.
rossum
The truth value of “2 + 2 = 4” depends on the meanings assigned to the symbols ‘2’, ‘4’, ‘+’ and ‘=’. Hence it cannot be an absolute truth when expresed in that form. In that form it is only a relative truth, dependent on the meanings assigned to those symbols. An Arab or a Chinese could use a different set of symbols: our ‘=’ is closer to the Chinese for two. Our 0 is closer to the Arabic for five (the Arabs use a symbol like our decimal point for zero).Whether it be that 2 + 2 = 4 is truth [a truth] (that is an absolute truth)
I’m sorry, but that is the silliest thing I have ever heard.The truth value of “2 + 2 = 4” depends on the meanings assigned to the symbols ‘2’, ‘4’, ‘+’ and ‘=’. Hence it cannot be an absolute truth when expresed in that form. In that form it is only a relative truth, dependent on the meanings assigned to those symbols. An Arab or a Chinese could use a different set of symbols: our ‘=’ is closer to the Chinese for two. Our 0 is closer to the Arabic for five (the Arabs use a symbol like our decimal point for zero).
The meanings assigned to symbols in human languages can change a lot: “Time flies like an arrow; fruit flies like a banana.” Parse “flies like” in both cases.
rossum
What?? I have to agree with tGette here, rossum…this IS one of the silliest things I’ve ever heard.The truth value of “2 + 2 = 4” depends on the meanings assigned to the symbols ‘2’, ‘4’, ‘+’ and ‘=’. Hence it cannot be an absolute truth when expresed in that form. In that form it is only a relative truth, dependent on the meanings assigned to those symbols. An Arab or a Chinese could use a different set of symbols: our ‘=’ is closer to the Chinese for two. Our 0 is closer to the Arabic for five (the Arabs use a symbol like our decimal point for zero).
rossum
Thank you!We can’t even agree on what “truth” is. Now you know why there are so many different religions.
We think we agree on what words mean in English, but each of us probably has different interpretations. In America an automobile has a hood and a trunk. In Britain a car has a bonnet and a boot. How can we be sure that we both understand the same meaning of the same word? Unless we are absolutely sure then any truth we convey from one person to another cannot be an absolute truth. It is contingent upon the match between our different understandings of the same words in our respective versions of out common language.I’m sorry, but that is the silliest thing I have ever heard.
Because…we are quite aware that we are typing in English and the assumption is that those symbols mean what they mean in English.
Two/to/too/tu plus two/to/too/tu equals four/fore/for. You need a language without homophones.“Two plus two equals four”
The sound “to” has a meaning in French and Latin at least, and probably in other languages.Would you tell me that since those words mean nothing in another language it is then not true?
I love your brain!We think we agree on what words mean in English, but each of us probably has different interpretations. In America an automobile has a hood and a trunk. In Britain a car has a bonnet and a boot. How can we be sure that we both understand the same meaning of the same word? Unless we are absolutely sure then any truth we convey from one person to another cannot be an absolute truth. It is contingent upon the match between our different understandings of the same words in our respective versions of out common language.
Two/to/too/tu plus two/to/too/tu equals four/fore/for. You need a language without homophones.
The sound “to” has a meaning in French and Latin at least, and probably in other languages.
rossum
My point is that you cannot have “2 + 2 = 4” on its own as an absolute truth. You also need an agreed definition of what those particular characters mean - with a different meaning the truth value might change. Hence those characters are not an absolute truth but a conditional truth; they do not stand alone but require the presence of an agreed set of meanings. For example, 2 + 2 = 10 in numbers to base 4; “2 + 2 = 4” is meaningless in base 4 since the symbol ‘4’ has no meaning in base 4, only the digits 0, 1, 2 and 3 have meaning.What?? I have to agree with tGette here, rossum…this IS one of the silliest things I’ve ever heard.
Regardless of the language it’s being written in, 2+2 still equals 4 whether it’s the English 2 or a scribble mark in sanskrit!