From: Nam Nguyen on
Marshall wrote:
> On Jul 10, 10:38 pm, Nam Nguyen <namducngu...(a)shaw.ca> wrote:
>> K_h wrote:
>>> "Nam Nguyen" <namducngu...(a)shaw.ca> wrote in message
>>> news:MTSZn.2663$Bh2.125(a)newsfe04.iad...
>>>> K_h wrote:
>>>>> Mathematical truth exists.
>>>> Sure. In your mind for example!
>>> And also outside of the human mind.
>> Did you mean _physically outside of human mind_ ? That's very bizarre to say
>> of mathematical abstractions that human thinks of. No?
>>
>
> Just an FYI for K_h, Nam is a complete buffoon and you
> should not feel the least bit compelled to respond to his
> nonsense. As I'm sure is already clear from the above.

You must have agreed with K_h that "Mathematical truth exists ...
outside of the human mind", because you don't seem to be able
to recognize and gave a technical critique such a nonsense, right?

Of course _that's all Marshall could utter in technical matters_
in the foundation: _idiotic babbling and attacks_.

--
----------------------------------------------------
There is no remainder in the mathematics of infinity.

NYOGEN SENZAKI
----------------------------------------------------
From: Transfer Principle on
On Jul 9, 6:22 am, Wolf K <weki...(a)sympatico.ca> wrote:
> IOW, you stopped thinking around grade 5 or 6.

Wolf K.'s reference to grades 5-6 here is interesting, since
this is around the age that students are required to refer to
infinitary concepts.

For example, according to the Common Core Standards
for Mathematics, Grades 6-8:

6.EE Expressions and Equations
8. Write an inequality of the form x > c or x < c to represent
a constraint or a condition in a real-world or mathematical
problem. Recognize that inequalities of the form x > c or
x < c have _infinitely_many_solutions_; represent solutions
of such inequalities on number line diagrams.
(emphasis mine)

7.NS The Number System
2d. Convert a rational number to a decimal using long
division; know that the decimal form of a rational number
terminates in 0s or eventually repeats.

8.EE Expressions and Equations
7a. Give examples of linear equations in one variable with
one solution, _infinitely_many_solutions_, or no solution.
(emphasis mine)

I give the (controversial, here in the U.S.) Common Core
Standards rather than my own state's as in order to avoid
leaving out the other 49 states.

But then again, this is an international audience. I see that
Wolf K. has a Canadian email address, while I know that
Herc is an Australian. I believe that Canadians enter the
sixth grade at around the same age that Americans do, but I
don't know about Australia's age grouping.

So Wolf K. accuses Herc of having stopped thinking since he
was 11 or 12, since this is the age at which one typically
learns about infinity. But Wolf K.'s comment about the sixth
grade becomes ironic when we juxtapose it with another
comment that he makes in this very thread about that same
grade level:

> The dictionary records what the dictionary maker figures people mean
> when they use words. The dictionary doesn't stipulate anything, even
> though many people (still dazed by the nonsense passed off as "grammar
> in grade 6) believe that the dictionary tells you waht words "really" mean.

Aha! So Wolf K. considers dictionary definitions to be "the
nonsense passed off as 'grammar' in grade 6" in the exact
same way that Herc considers infinity to be the nonsense
passed off as mathematics in grade 6. Yet Wolf K. accuses
Herc of having stopped thinking in grade 6, since the latter
rejects "there are infinitely many numbers," which he should've
learned about back in grade 6. Then, why can't I accuse Wolf
K. of having stopped thinking in grade 6, since Wolf K. rejects
"dictionary definitions are _the_ definition," which _he_ should've
learned about back in grade 6? After all, what's good for the
goose is good for the gander!

But I don't believe that Wolf stopped thinking in grade 6 just
because he disagrees with his sixth grade teacher. Instead, I
believe that Wolf is a descriptivist -- i.e., someone who believes
that it's how people use a word in real life that determines what
_the_ definition of a word is, rather than what some dictionary
_prescribes_ the definition to be.

Likewise, Herc didn't stop thinking when he was 11 or 12 just
because he disagrees with his teacher. Instead, I believe that
Herc is a finitist -- i.e., someone who believes that the only sets
that exist are finite -- since real life deals with finite objects --
rather than the sets that some axioms _prescribe_ to exist.

Rather than stopped thinking, Wolf _started_ thinking that what
he learned is wrong and became a descriptivist. Similarly,
rather than stopped thinking, Herc _started_ thinking that what
he learned is wrong and became a finitist.
From: Curt Welch on
"K_h" <KHolmes(a)SX729.com> wrote:
> In regular arithmetic 4+5=9 is true but Curt was claiming
> that there is some tiny chance it could be wrong in regular arithmetic.
> Curt is obviously wrong there.

If you limit the scope of the measure of "truth" to "in regular arithmetic"
then you are correct, it's an absolute truth. I was not talking about "in
regular arithmetic". I was talking about "in life". I was talking about
reality vs the fairy tale stories we make up called "in regular
arithmetic". In the stories we make up, we pretend that absolute truth can
and does exist, and all of math takes place in that fairy tale land. It's
highly useful and important to do math under that belief. But what's
invalid, is to assume the lies we use to do math, actually happen (or
exist) in the real world.

I can produce language that describes a reality where pink flying elephants
with no mass exist. But no one is going to get confused about whether the
reality I am talking about actually exists in our universe or not. It's
just a story I made up by taking things that do exist in our universe, and
combining them in a way that has never been seen, and which is highly
unlikely to ever be seen in our universe. That's how the idea of absolute
truth was created as well.

But yet, somehow, many people get so engrossed in the stores we make up as
we talk the language of mathematics, they start to believe the world of
mathematics is not just a story, but that it actually exists. That it not
only exists, but that it "lives on" even after all the story tellers die
off. It is as if they believe the pink elephants exist and live on
forever, even after everyone that's heard the story has died off.

--
Curt Welch http://CurtWelch.Com/
curt(a)kcwc.com http://NewsReader.Com/
From: George Greene on
On Jul 10, 12:31 pm, Wolf K <weki...(a)sympatico.ca> wrote:
> The dictionary records what the dictionary maker figures people mean
> when they use words.

True.

> The dictionary doesn't stipulate anything,

False.

> even though many people (still dazed by the nonsense passed off as "grammar
> in grade 6) believe that the dictionary tells you what words "really" mean.

We are not going to fight the prescriptive/descriptive battle all over
again here in this thread.
That battle long predates us and it really is a philosophical battle.
OF COURSE the dictionary prescribes. It cannot ENFORCEABLY prescribe,
but
neither can anybody else. There is a sense in which it doesn't even
matter if stipulations are enforceable.

You may choose to believe if you like that words don't really mean
things.
Good luck "THINKING" that, and thinking is in scare-quotes for a
reason.
The obvious problem with your skepticism about whether "words really
mean" things is that
it doesn't cope too well with fuzziness about the meaning of "really"
or of "mean".

From: George Greene on
On Jul 10, 12:31 pm, Wolf K <weki...(a)sympatico.ca> wrote:
> (still dazed by the nonsense passed off as "grammar
> in grade 6)

No farting in church. This is sci.logic.
Even if grammar isn't all that coherent for NATURAL languages, it is
still very much
necessary&relevant for computer programming languages, formal
languages, and logic.
Around HERE, what you call "nonsense" was a noble attempt to get
people to think straight
and write clearly -- even if it got a little Procrustean at times.