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Author: ImmortalistImmortalist Date: Mar 28, 2008 18:36
The material conditional, also known as the material implication or
truth functional conditional, expresses a property of certain
conditionals in logic. ...People have a pretty clear idea what if-then
means. However, in formal logic, if-then is defined by material
implication, which is not consistent with the common understanding of
conditionals. In formal logic, the statement "If 2+2=5 then 1+1=2" is
true. However, '1+1=2' is true regardless of the content of the
antecedent in the conditional. The statement as a whole must be true,
because the one way conditional only refers to a particular case, it
says nothing of the truth value of the antecedent. Formal logic has
shown itself extremely useful in formalizing argumentation,
philosophical reasoning, and mathematics. However, the discrepancy...
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Author: NewberryNewberry Date: Mar 28, 2008 19:05
On Mar 28, 6:36Â pm, Immortalist yahoo.com> wrote:> The material conditional, also known as the material implication or
> truth functional conditional, expresses a property of certain
> conditionals in logic. ...People have a pretty clear idea what if-then
> means. However, in formal logic, if-then is defined by material
> implication, which is not consistent with the common understanding of
> conditionals. In formal logic, the statement "If 2+2=5 then 1+1=2" is
> true. However, '1+1=2' is true regardless of the content of the
> antecedent in the conditional. The statement as a whole must be true,
> because the one way conditional only refers to a particular case, it
> says nothing of the truth value of the antecedent. Formal logic has
> shown itself extremely useful in formalizing argumentation,
> philosophical reasoning, and mathematics. However, the discrepancy
> between material implication and the general conception of
> conditionals is a topic of intense investigation.
>
> Is the problem;
>
> 1. an inadequacy in formal logic
> ...
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Author: TronTron Date: Mar 28, 2008 19:16
> The material conditional, also known as the material implication or...
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Author: Brian FletcherBrian Fletcher Date: Mar 28, 2008 19:16
> The material conditional, also known as the material implication or
> truth functional conditional, expresses a property of certain
> conditionals in logic. ...People have a pretty clear idea what if-then
> means. However, in formal logic, if-then is defined by material
> implication, which is not consistent with the common understanding of
> conditionals. In formal logic, the statement "If 2+2=5 then 1+1=2" is
> true. However, '1+1=2' is true regardless of the content of the
> antecedent in the conditional. The statement as a whole must be true,
> because the one way conditional only refers to a particular case, it
> says nothing of the truth value of the...
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Author: ImmortalistImmortalist Date: Mar 28, 2008 19:37
On Mar 28, 7:16Â pm, "Tron" wrote:
>> The material conditional, also known as the material implication or
>> truth functional conditional, expresses a property of certain
>> conditionals in logic. ...People have a pretty clear idea what if-then
>> means. However, in formal logic, if-then is defined by material
>> implication, which is not consistent with the common understanding of
>> conditionals. In formal logic, the statement "If 2+2=5 then 1+1=2" is
>> true. However, '1+1=2' is true regardless of the content of the
>> antecedent in the conditional. The statement as a whole must be true,
>> because the one way conditional only refers to a particular case, it
>> says nothing of the truth value of the antecedent. Formal logic has
>> shown itself extremely useful in formalizing argumentation, ...
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Author: herbzetherbzet Date: Mar 28, 2008 22:32
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Author: Michael GordgeMichael Gordge Date: Mar 28, 2008 22:46
On Mar 29, 10:36Â am, Immortalist yahoo.com> wrote:
> In formal logic, the statement "If 2+2=5 then 1+1=2" is
> true.
The word formal has its own meaning in "formal logic" soooo now give
the meaning of logic in "formal logic"
> However, '1+1=2' is true regardless of the content of the
> antecedent in the conditional.
1 + 1 = 2 is only true when each "unit" is directly attributed to
something in sensory reality,
e.g. 1 cat + 1 dog = 2 animals
Until then 1 + 1 = 2 is at best nothing more than a brain exercise.
Reality is true, the identification of it causes major problems ONLY
for those who dont associate man's theories e.g. numbers, to reality,
and they're typically Kantians Poppereens Russellians, mystics etal.
Michael Gordge
Michael Gordge
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Author: Brian FletcherBrian Fletcher Date: Mar 29, 2008 01:59
"Michael Gordge" xtra.co.nz> wrote in message
news:21bf0708-922c-4038-bd3c-243ff6d6ad0b@e10g2000prf.googlegroups.com...
On Mar 29, 10:36 am, Immortalist yahoo.com> wrote:
> In formal logic, the statement "If 2+2=5 then 1+1=2" is
> true.
The word formal has its own meaning in "formal logic" soooo now give
the meaning of logic in "formal logic"
> However, '1+1=2' is true regardless of the content of the
> antecedent in the conditional.
1 + 1 = 2 is only true when each "unit" is directly attributed to
something in sensory reality,
e.g. 1 cat + 1 dog = 2 animals
Until then 1 + 1 = 2 is at best nothing more than a brain exercise.
Reality is true, the identification of it causes major problems ONLY
for those who dont associate man's theories e.g. numbers, to reality,
and they're typically Kantians Poppereens Russellians, mystics etal.
Michael Gordge
Michael Gordge
***Which is exactly what I said...and me being an apprentice mystic as well.
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Author: Brian FletcherBrian Fletcher Date: Mar 29, 2008 01:59
"Michael Gordge" xtra.co.nz> wrote in message
news:21bf0708-922c-4038-bd3c-243ff6d6ad0b@e10g2000prf.googlegroups.com...
On Mar 29, 10:36 am, Immortalist yahoo.com> wrote:
> In formal logic, the statement "If 2+2=5 then 1+1=2" is
> true.
The word formal has its own meaning in "formal logic" soooo now give
the meaning of logic in "formal logic"
> However, '1+1=2' is true regardless of the content of the
> antecedent in the conditional.
1 + 1 = 2 is only true when each "unit" is directly attributed to
something in sensory reality,
e.g. 1 cat + 1 dog = 2 animals
Until then 1 + 1 = 2 is at best nothing more than a brain exercise.
Reality is true, the identification of it causes major problems ONLY
for those who dont associate man's theories e.g. numbers, to reality,
and they're typically Kantians Poppereens Russellians, mystics etal.
Michael Gordge
Michael Gordge
***Which is exactly what I said...and me being an apprentice mystic as well.
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Author: EdEd Date: Mar 29, 2008 07:19
On Mar 28, 9:36Â pm, Immortalist yahoo.com> wrote:> The material conditional, also known as the material implication or
> truth functional conditional, expresses a property of certain
> conditionals in logic. ...People have a pretty clear idea what if-then
> means. However, in formal logic, if-then is defined by material
> implication, which is not consistent with the common understanding of
> conditionals. In formal logic, the statement "If 2+2=5 then 1+1=2" is
> true. However, '1+1=2' is true regardless of the content of the
> antecedent in the conditional. The statement as a whole must be true,
> because the one way conditional only refers to a particular case, it
> says nothing of the truth value of the antecedent. Formal logic has
> shown itself extremely useful in formalizing argumentation,
> philosophical reasoning, and mathematics. However, the discrepancy
> between material implication and the general conception of
> conditionals is a topic of intense investigation.
>
> Is the problem;
>
> 1. an inadequacy in formal logic
> ...
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