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Stephen Harris
Posted: Sat Jan 31, 2004 8:57 am
Guest
"Eray Ozkural exa" <erayo@bilkent.edu.tr> wrote in message
news:fa69ae35.0401310422.6817b1de@posting.google.com...
Quote:
Hello Stephen,

"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message
news:<bNBSb.18121$SK3.10273@newssvr27.news.prodigy.com>...
SH: Number theory as a formal system is not constructed
only by logic. It requires axioms (unproven assumptions).
Peano Arithmetic attempts, I think, to have the human
experience with numbers guide the selection of axioms.
Godel's Inc. Theorem is a result about a formal system, not reality.

Natural language also existed before any attempt was made
to formalize it. Cyc is a product of human ontolgists using their
intuition in an attempt to approximate the unknown rules which
generate natural language. The million common-sense rules that
Cyc uses to describe/simulate the function of language all act
as axioms, none are proven. There is no algorithmic method
to generate the actual rules (supposing there is a set of actual rules)
which compose the interaction of natural language. It is backwards
to claim that formal Incompleteness results back-propagate and cause
our incomplete knowlege of reality. The very act of representing
reality into a formal system creates self-referential artifacts.
Substituting equivalneces for Incompleteness such as lambda calculus
doesn't make a formal system any more authentic or of original import.


I agree. These are all great observations, indeed.

I think Incompleteness is not a synonym for physical uncertainty,
except for some formal system which postulates this relationship.

Do you mean Heisenberg uncertainty principle? I tend to agree, however
uncertainy seems to be the result of a more specific complexity law in
action.


I think it is similar to the Heisenberg uncertainty principle but more
about information. I posted what I really meant in a reply to Dirk
but was in a hurry so the writing is not so great. Yes I think it has
to do with complexity/chaos/randomness and related physical difficulties
in experimentally veryifying what happened in the first nano-nano
nano- seconds of the Big Bang; a fundamental limitation on information
available to human modes of perception which imposes itself on
formal systems. We don't know exactly how natural language works
or how consciousness is organized so there is plenty of room for
error when building a contratption to simulate such. We dont' know
if our ideas about physical reality are consistent. And there are conflicts
between predictions made by the quantum theory and relativity about
blackholes which are unreconciled in an area called quantum gravity.

Quote:
Regards,

--
Eray Ozkural
Stephen Harris
Posted: Sat Jan 31, 2004 3:51 pm
Guest
"Eray Ozkural exa" <erayo@bilkent.edu.tr> wrote in message
news:fa69ae35.0401310422.6817b1de@posting.google.com...
Quote:
Hello Stephen,

"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message
news:<bNBSb.18121$SK3.10273@newssvr27.news.prodigy.com>...
SH: Number theory as a formal system is not constructed
only by logic. It requires axioms (unproven assumptions).
Peano Arithmetic attempts, I think, to have the human
experience with numbers guide the selection of axioms.
Godel's Inc. Theorem is a result about a formal system, not reality.

Natural language also existed before any attempt was made
to formalize it. Cyc is a product of human ontolgists using their
intuition in an attempt to approximate the unknown rules which
generate natural language. The million common-sense rules that
Cyc uses to describe/simulate the function of language all act
as axioms, none are proven. There is no algorithmic method
to generate the actual rules (supposing there is a set of actual rules)
which compose the interaction of natural language. It is backwards
to claim that formal Incompleteness results back-propagate and cause
our incomplete knowlege of reality. The very act of representing
reality into a formal system creates self-referential artifacts.
Substituting equivalneces for Incompleteness such as lambda calculus
doesn't make a formal system any more authentic or of original import.


I agree. These are all great observations, indeed.

I think Incompleteness is not a synonym for physical uncertainty,
except for some formal system which postulates this relationship.

Do you mean Heisenberg uncertainty principle? I tend to agree, however
uncertainy seems to be the result of a more specific complexity law in
action.

Regards,


The Shadow assassin Of The Mind, Daryl McCullough wrote:

...."I don't see paradoxes everywhere, but I do believe that
the sort of incompleteness that Godel found in formal languages
are actually present in informal language, as well. We just don't
worry about it as much, because nobody expects informal reasoning
to be consistent....

What my position does *not* entail is the belief that
humans have any special facility for recognizing truth.
It does not entail that there is any such thing as an
ideal language for science, or mathematics. We invent
language to better describe the models we are interested in.

Another point of clarification is that this point of
view does not imply that reasoning consists of theorem
proving. Human reasoning almost never involves logic.
Instead, to determine the truth or falsity of a hypothetical
statement, we compare that statement with the more-or-less
fuzzy model existing in our heads."

SH: So Daryl says he expects incompleteness to be found
in informal language/reasoning, almost never involving logic,
but rather a model, and "we invent language to better describe
the models we are interested in [and]Godel found incompleteness
in formal languages."

It seems to me that this usage of "incompleteness" does not connote
the same level of categorical meaning since the generating method diifers.
I think for the meanings to be quite analogous would require some type
of self-evident assumption that the cosmos deploys incompleteness in
the same sense that it is encountered within a formal system, perhaps
by regarding the universe as an algorithmic operation, computer or CA.
A similar premise arises for computationalism and the human mind.. But
failing this assumption(s) then "incompleteness" does not share the same
shade of meaning lurking in the shadowy, shallow pools of interpretation.

Regards,
Stephen

From the "Phoenix Exultant" page 151. by John C. Wright
"But the universe, by definition, must always be more complex than
the information-parts or thoughts one uses to encode that complexity."
Tristan Lear
Posted: Sat Jan 31, 2004 8:53 pm
Guest
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message news:<bcqSb.19633$zL.14153@newssvr25.news.prodigy.com>...
Quote:
"Tristan Lear" <tristanlear3309@yahoo.com> wrote in message
news:f010abdf.0401292338.2b822144@posting.google.com...
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message
news:<OphSb.7584$Fp5.1812@newssvr29.news.prodigy.com>...
"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:jbysxveflzcngvpbpna.hs8e843.pminews@news1.sympatico.ca...
On 27 Jan 2004 21:28:01 -0800, Ron Peterson wrote:

"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:<jbysxveflzcngvpbpna.hrwqx04.pminews@news1.sympatico.ca>...
On Thu, 22 Jan 2004 19:30:41 GMT, Lester Zick wrote:

Well I don't see any obvious reason why the language we use is
necessarily inadequate to explaining the problems we phrase in the
language.

Well, it's _human_ language, isn't it? That's an obvious enough
reason
for
me.

Human languages are extensible, so I think that any problem that can
be posed can be explained. Does someone have an example of a problem
that can't be explained?

--
Ron

Nice question. I'm not sure what you mean by "explaining" a problem.
It
seems
to me that posing a problem is equivalent to explaining it. So I'll
shift
the
ground, perhaps unfairly, to solving problems rather than explaining
them.
Granting this shift, we see that posing a problem is not the same as
solving
it. Mathematics is full of examples of problems that can be clearly
stated
but whose solution is by no means clear. You may object that
mathematics
isn't what you mean by an extension of language. But I would argue
that
mathematics is an extension of language, and then some. I suppose we
can
dismiss those problems of which we know that there is no solution,
since
showing that no solution is possible is a type of solution.

Here follow a few examples that I know of, and to some extent
understand:
There are problems that cannot be solved because the universe will not
last
long enough to arrive at a solution. There are problems that cannot
solved
because we cannot determine whether the algorithm that could solve
them
will
ever arrive at a solution. (This is "the halting problem.") There are
others
of which one cannot say whether they have a solution. (This is the
decidability problem.) If one may paraphrase Goedel's theorem in terms
of
solving problems, one may say that there are problems that cannot be
solved
within the system in which they are posed. (But I'm not sure that this
paraphrase of Goedel is permissible, which in itself shows that not
all
problems that can be posed can be solved.) There are problems of which
one
cannot say that they are solvable, or if solvable, whether the
solution is
optimal. There are problems of which one can say that a solution
exists,
but
one cannot say what that solution is (this is sometimes enough to
inspire
work that produces a solution, so some of these problems don't answer
your
question.)

HTH


The issue under discussion is whether language is adequate. Language is
composed of words representing concepts. Concepts can include terms
which do not have an explanation. The word "electricity" represents a
concept but the question "What is electricity" has not been rigorously
answered because the answer resides in _theories_ of Physics which
does not have a "Theory of Everything". It seems to me that "adequacy"
has the word "incompleteness" substituted for it when the limits of
formal
axiomatic systems such as Goedel's Incompleteness theorem is mentionded.

Natural language is not a formal axiomatic system. Goedlian
Incompleteness
cannot be utilized to "explain" why AI can only be realized by humans
and
not by machines, even if the assertion is true independent of that
surmise.

Wolf Kirchmeir writes:
"You may object that mathematics isn't what you mean by an extension of
language. But I would argue that mathematics is an extension of
language,
and then some."

SH: Then you would certainly be in the minority. The "unreasonable
effectiveness of mathematics" is often commented upon but that is
due to its attempts to map to our consensus reality. That is not what
formal languages and formal mathematical axiomatics systems prioritize.

So our natural language is a collection of words and their usage and the
words are based upon expressing concepts. Creating a hypothetical
concept which cannot be conceived, thus no example can be given
thus the concept cannot be named, is a logical paradox not an example
of the inadequacy of language.

What happens when an irresistable force encounters an immovable object?
How can the significance of counterfactual mathematical theorems be
mapped to the underlying reality of our existence? Do heros in our
fictional
books actually suffer fates? I've read the clever sounding: 'the
solution to
a
problem is found in the question' which is so general as to become
trivial.

Regards,
Stephen


Have any of you guys heard of "E-Prime?" (English minus the verb "to
be" as an attempt to reduce aristotlean logic and replace it with a
more probablistic, concrete, accountable mode of evaluating?? it
relies on the sapir-whorf-korzybyski hypothesis in that if we alter
our language we can alter our perceptions (they argue for the better
by eliminating "to be") i've written three papers in the modified
language so far and I've found it helps me write more vividly and
pulls my head out of the clouds (no vague abstractions).. robert anton
wilson talks about it alot in his book quantum psychology ..

the international society for general semantics
http://www.generalsemantics.org and the institute for general
semantics http://www.general-semantics.org have some literature on it


I once heard of this but have not tried it. I think such solutions contain
an inherent shortcoming. I think it is a theorem that any two languages
which do not contain the exact same symbols will contain descriptions
which cannot be identically translated from one language to the other.
So I think there are areas of a language which dispenses with "to be"
which will not have identical meaning substitutions in our natural language.

Google:
"I would advise that Mr. Post be very careful about extending what he
knows about the terminology of morphology-syntax-semantics in
NATURAL LANGUAGE/LINGUISTICS to morphology-syntax-semantics in MATHEMATICAL
LOGIC. Terms like implication are
used in very different ways in these different fields. We can show a very
clear parallel between syntax and semantics for the predicate and
propositional calculi which is not present for natural languages.
Presumably (cf. my remarks about implication and entailment above)
this intimate relation between language and meta-language has
confused Mr. Post."

Machine translation of poetry from one language to another
is reported to fail rather miserably.

From the "Phoenix Exultant" page 151. "But the universe, by definition,
must always be more complex than the information-parts or thoughts
one uses to encode that complexity."

I think this quote addresses the inability of the human mind to completely
understand the universe; not the inadequacy of language to clothe those
concepts which do have meaning with words within the tapestry of language.
I'm not at all sure that this situation of incomplete knowledge of the
universe due to limited perception of the human mind is the same as Godelian
Incompleteness in another guise failing to correlate universal knowledge.

To be or not to be,
Stephen


the descriptions, for that matter, probably aren't translateable from
one person to the next -- behind each word it is probable that we
recall a magnificant gestalt of previous uses of that word according
to our own experience .. rather than a merriam-webster definition ..

that at least applies to nouns and adjectives.. the e-prime advocates
say that we're not really changing the lexicon that much by removing
to be... rather we're forcing a certain type of sentance structure ..
its more behind the assembley of the sentences than it is beind the
words themselves..

the french "what are you called" is closer to "reality" than the
english "what is your name?" while neither are in e-prime .. the
second one gets closer to the first one when e-prime is used ..

"what do people call you?" -- e-prime
Michael Olea
Posted: Sat Jan 31, 2004 9:29 pm
Guest
in article f010abdf.0401311753.2be2a768@posting.google.com, Tristan Lear at
tristanlear3309@yahoo.com wrote on 1/31/04 5:53 PM:

Quote:
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message
news:<bcqSb.19633$zL.14153@newssvr25.news.prodigy.com>...
"Tristan Lear" <tristanlear3309@yahoo.com> wrote in message
news:f010abdf.0401292338.2b822144@posting.google.com...
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message
news:<OphSb.7584$Fp5.1812@newssvr29.news.prodigy.com>...
"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:jbysxveflzcngvpbpna.hs8e843.pminews@news1.sympatico.ca...
On 27 Jan 2004 21:28:01 -0800, Ron Peterson wrote:

"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:<jbysxveflzcngvpbpna.hrwqx04.pminews@news1.sympatico.ca>...
On Thu, 22 Jan 2004 19:30:41 GMT, Lester Zick wrote:

Well I don't see any obvious reason why the language we use is
necessarily inadequate to explaining the problems we phrase in the
language.

Well, it's _human_ language, isn't it? That's an obvious enough
reason
for
me.

Human languages are extensible, so I think that any problem that can
be posed can be explained. Does someone have an example of a problem
that can't be explained?

--
Ron

Nice question. I'm not sure what you mean by "explaining" a problem.
It
seems
to me that posing a problem is equivalent to explaining it. So I'll
shift
the
ground, perhaps unfairly, to solving problems rather than explaining
them.
Granting this shift, we see that posing a problem is not the same as
solving
it. Mathematics is full of examples of problems that can be clearly
stated
but whose solution is by no means clear. You may object that
mathematics
isn't what you mean by an extension of language. But I would argue
that
mathematics is an extension of language, and then some. I suppose we
can
dismiss those problems of which we know that there is no solution,
since
showing that no solution is possible is a type of solution.

Here follow a few examples that I know of, and to some extent
understand:
There are problems that cannot be solved because the universe will not
last
long enough to arrive at a solution. There are problems that cannot
solved
because we cannot determine whether the algorithm that could solve
them
will
ever arrive at a solution. (This is "the halting problem.") There are
others
of which one cannot say whether they have a solution. (This is the
decidability problem.) If one may paraphrase Goedel's theorem in terms
of
solving problems, one may say that there are problems that cannot be
solved
within the system in which they are posed. (But I'm not sure that this
paraphrase of Goedel is permissible, which in itself shows that not
all
problems that can be posed can be solved.) There are problems of which
one
cannot say that they are solvable, or if solvable, whether the
solution is
optimal. There are problems of which one can say that a solution
exists,
but
one cannot say what that solution is (this is sometimes enough to
inspire
work that produces a solution, so some of these problems don't answer
your
question.)

HTH


The issue under discussion is whether language is adequate. Language is
composed of words representing concepts. Concepts can include terms
which do not have an explanation. The word "electricity" represents a
concept but the question "What is electricity" has not been rigorously
answered because the answer resides in _theories_ of Physics which
does not have a "Theory of Everything". It seems to me that "adequacy"
has the word "incompleteness" substituted for it when the limits of
formal
axiomatic systems such as Goedel's Incompleteness theorem is mentionded.

Natural language is not a formal axiomatic system. Goedlian
Incompleteness
cannot be utilized to "explain" why AI can only be realized by humans
and
not by machines, even if the assertion is true independent of that
surmise.

Wolf Kirchmeir writes:
"You may object that mathematics isn't what you mean by an extension of
language. But I would argue that mathematics is an extension of
language,
and then some."

SH: Then you would certainly be in the minority. The "unreasonable
effectiveness of mathematics" is often commented upon but that is
due to its attempts to map to our consensus reality. That is not what
formal languages and formal mathematical axiomatics systems prioritize.

So our natural language is a collection of words and their usage and the
words are based upon expressing concepts. Creating a hypothetical
concept which cannot be conceived, thus no example can be given
thus the concept cannot be named, is a logical paradox not an example
of the inadequacy of language.

What happens when an irresistable force encounters an immovable object?
How can the significance of counterfactual mathematical theorems be
mapped to the underlying reality of our existence? Do heros in our
fictional
books actually suffer fates? I've read the clever sounding: 'the
solution to
a
problem is found in the question' which is so general as to become
trivial.

Regards,
Stephen


Have any of you guys heard of "E-Prime?" (English minus the verb "to
be" as an attempt to reduce aristotlean logic and replace it with a
more probablistic, concrete, accountable mode of evaluating?? it
relies on the sapir-whorf-korzybyski hypothesis in that if we alter
our language we can alter our perceptions (they argue for the better
by eliminating "to be") i've written three papers in the modified
language so far and I've found it helps me write more vividly and
pulls my head out of the clouds (no vague abstractions).. robert anton
wilson talks about it alot in his book quantum psychology ..

the international society for general semantics
http://www.generalsemantics.org and the institute for general
semantics http://www.general-semantics.org have some literature on it


I once heard of this but have not tried it. I think such solutions contain
an inherent shortcoming. I think it is a theorem that any two languages
which do not contain the exact same symbols will contain descriptions
which cannot be identically translated from one language to the other.
So I think there are areas of a language which dispenses with "to be"
which will not have identical meaning substitutions in our natural language.

Google:
"I would advise that Mr. Post be very careful about extending what he
knows about the terminology of morphology-syntax-semantics in
NATURAL LANGUAGE/LINGUISTICS to morphology-syntax-semantics in MATHEMATICAL
LOGIC. Terms like implication are
used in very different ways in these different fields. We can show a very
clear parallel between syntax and semantics for the predicate and
propositional calculi which is not present for natural languages.
Presumably (cf. my remarks about implication and entailment above)
this intimate relation between language and meta-language has
confused Mr. Post."

Machine translation of poetry from one language to another
is reported to fail rather miserably.

From the "Phoenix Exultant" page 151. "But the universe, by definition,
must always be more complex than the information-parts or thoughts
one uses to encode that complexity."

I think this quote addresses the inability of the human mind to completely
understand the universe; not the inadequacy of language to clothe those
concepts which do have meaning with words within the tapestry of language.
I'm not at all sure that this situation of incomplete knowledge of the
universe due to limited perception of the human mind is the same as Godelian
Incompleteness in another guise failing to correlate universal knowledge.

To be or not to be,
Stephen


the descriptions, for that matter, probably aren't translateable from
one person to the next -- behind each word it is probable that we
recall a magnificant gestalt of previous uses of that word according
to our own experience .. rather than a merriam-webster definition ..

that at least applies to nouns and adjectives.. the e-prime advocates
say that we're not really changing the lexicon that much by removing
to be... rather we're forcing a certain type of sentance structure ..
its more behind the assembley of the sentences than it is beind the
words themselves..

the french "what are you called" is closer to "reality" than the
english "what is your name?" while neither are in e-prime .. the
second one gets closer to the first one when e-prime is used ..

"what do people call you?" -- e-prime

In spanish we ask "como te llamas?" - "how do you call yourself?"

Albert Ellis, founder of REBT (Rational Emotive Behavioral Therapy),
advocates e-prime. This still allows the ever handy "I did not have sex with
that woman".
Eray Ozkural exa
Posted: Sat Jan 31, 2004 9:43 pm
Guest
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message news:<8zUSb.8391$Wi.5824@newssvr29.news.prodigy.com>...
[snip]
Quote:
It seems to me that this usage of "incompleteness" does not connote
the same level of categorical meaning since the generating method diifers.
I think for the meanings to be quite analogous would require some type
of self-evident assumption that the cosmos deploys incompleteness in
the same sense that it is encountered within a formal system, perhaps
by regarding the universe as an algorithmic operation, computer or CA.
A similar premise arises for computationalism and the human mind.. But
failing this assumption(s) then "incompleteness" does not share the same
shade of meaning lurking in the shadowy, shallow pools of interpretation.


It took a while to understand the discussion among you but, I think my
answer is: Yes!

Quote:
Regards,
Stephen


From the "Phoenix Exultant" page 151. by John C. Wright
"But the universe, by definition, must always be more complex than
the information-parts or thoughts one uses to encode that complexity."

Oh, algorithmic incompleteness can at least be expressed in purely
natural language!

Regards,

--
Eray Ozkural
Stephen Harris
Posted: Sun Feb 01, 2004 5:08 pm
Guest
"Eray Ozkural exa" <erayo@bilkent.edu.tr> wrote in message
news:fa69ae35.0401311843.7e65bec0@posting.google.com...
Quote:
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message
news:<8zUSb.8391$Wi.5824@newssvr29.news.prodigy.com>...
[snip]
It seems to me that this usage of "incompleteness" does not connote
the same level of categorical meaning since the generating method
diifers.
I think for the meanings to be quite analogous would require some type
of self-evident assumption that the cosmos deploys incompleteness in
the same sense that it is encountered within a formal system, perhaps
by regarding the universe as an algorithmic operation, computer or CA.
A similar premise arises for computationalism and the human mind.. But
failing this assumption(s) then "incompleteness" does not share the same
shade of meaning lurking in the shadowy, shallow pools of
interpretation.


It took a while to understand the discussion among you but, I think my
answer is: Yes!

Regards,
Stephen


From the "Phoenix Exultant" page 151. by John C. Wright
"But the universe, by definition, must always be more complex than
the information-parts or thoughts one uses to encode that complexity."

Oh, algorithmic incompleteness can at least be expressed in purely
natural language!

Regards,

--
Eray Ozkural

I was browsing google on this topic and found:

English cannot be reduced to a consistent set of rules. Many have tried.
All have failed. Perhaps you should look into Noam Chomsky's attempts at
the task; search for references to "Transformational Grammar" for a
start. He appears to have begun with the assumption that [natural]
language can be modeled with a finite set of rules, but the last I saw on
the topic looked more like a proof that Goedel's Incompleteness Theorem
(q.v.) applies.

Quote:
...It's not just the size of the vocabulary, but it's the
way the vocabulary is used. I.e., where the verbs, nouns, and modifiers
are placed and how some modifiers change the meaning of some words
differently than other words, etc.

The "rules" for explaining the grammar are not completely expressible in
formal terms which are less complex than the grammar itself. Any complete
description of the rules will end up *being* the rules, and vice versa.

And *that* is a pretty good summary of what makes something "natural
language".

SH: This trend for reducing or compressing rules turned up in
mathematics also. This also reminded of Chaitin's AIT. They don't
allow Pi to be considered random (although it passes all the tests)
because there is short rule (algorithm) which will produce oodles
of output. There idea of random is an input number which cannot
be compressed (no rule to make a shortcut process) so that the
input string and the output string are the same length.

So this AIT situation reminded of "Any complete description of the
rules will end up *being* the rules, and vice versa." Maybe it is just
a coincidence, but I seem to remember something similar from when
I looked into the foundations of mathematics. Torkel Franzen wrote:

Beth's proof of this theorem appeared in 1953:

Evert W. Beth. On Padoa's method in the theory of
definitions. Indag. Math., 15:330-339, 1953.

So the first question is, what is Padoa's method? Alessandro Pado
(who, unlike Beth, has a biography at the MacTutor History of
Mathematics archive, http://turnbull.dcs.st-and.ac.uk/history/index.html)

came up with a method to prove that a particular concept in an
axiomatic theory can't be defined within the theory in terms of
other concepts. He presented this work at the Paris congress in 1900.

The idea, like most good ideas, is simple. Suppose we have an
axiomatic theory formulated in terms of the primitive concepts
"line", "point", and "number". We're convinced that there isn't any
way of defining, say, "number" in terms of "line" and "point". But
how do we prove this? Well, if "number" could in fact be defined
in terms of "line" and "point", then for any two systems of objects
and relations satisfying our axioms, if they agree on the meaning
of "line" and "point", they must also agree on the meaning of
"number". So to prove that "number" can't be defined in terms of
"line" and "point" we exhibit two different systems of objects and
relations satisfying the axioms which agree on the meaning of
"line" and "point" but disagree on the meaning of "number".

With the introduction of the model theory of first order logic, this
method of Padoa's can be presented as a theorem.

I thought you might find this interesting since it is a bit obscure,
Stephen
Wolf Kirchmeir
Posted: Mon Feb 02, 2004 6:01 am
Guest
On Fri, 30 Jan 2004 00:18:54 GMT, Stephen Harris wrote:

Quote:
The issue under discussion is whether language is adequate. Language is
composed of words representing concepts.

I wish it were that simple.

Quote:
Concepts can include terms
which do not have an explanation. The word "electricity" represents a
concept but the question "What is electricity" has not been rigorously
answered because the answer resides in _theories_ of Physics which
does not have a "Theory of Everything". It seems to me that "adequacy"
has the word "incompleteness" substituted for it when the limits of formal
axiomatic systems such as Goedel's Incompleteness theorem is mentionded.

I'd say that the meaning of a term "without an explanation" is the way it's
used in a theory. IOW, it seems to me that axioms are either circular or
indirect instructions on how a term may be used, which amounts to saying an
axiom specifies which statements using such terms are true. (I hope that's
clear enough.)

Quote:
Natural language is not a formal axiomatic system.

Agreed. However, when we "pose" a problem in ordinary language the case
changes. See below.

Quote:
Goedlian Incompleteness
cannot be utilized to "explain" why AI can only be realized by humans and
not by machines, even if the assertion is true independent of that surmise.

I don't think I understand this comment well enough to agree, disagree, or
otherwise respond to it.

Quote:
Wolf Kirchmeir writes:
"You may object that mathematics isn't what you mean by an extension of
language. But I would argue that mathematics is an extension of language,
and then some."

SH: Then you would certainly be in the minority. The "unreasonable
effectiveness of mathematics" is often commented upon but that is
due to its attempts to map to our consensus reality. That is not what
formal languages and formal mathematical axiomatics systems prioritize.

Agreed; but I was using your term extensible/extension, and thought I knew
what you meant by it, namely, that we simply add terms to our vocabulary so
that we can "pose" a problem properly. However, IMO we do a great deal more
than merely add terms, we also I think formalise syntax so that the "posing"
of the problem represents its structure properly. IOW, we create or assume a
"formal axiomatic system."

Quote:
So our natural language is a collection of words and their usage and the
words are based upon expressing concepts. Creating a hypothetical
concept which cannot be conceived, thus no example can be given
thus the concept cannot be named, is a logical paradox not an example
of the inadequacy of language.

The logical paradox is clear enough, and I wasn't, I think, implying it. What
I was trying to say is that even when we know that there some problem, that
doesn't mean we can "pose" it. It may be simply that we don't yet have
sufficient conceptual clarity to ask the right question, in which case at
some time in the future someone will pose the problem correctly, and it will
be solved. (The resolution of Zeno's paradox of motion is an example of such
progress IMO.)

However, it is also logically possible that we are incapable of sufficient
conceptual clarity. The paradox of the inconceivable concept implies that we
can never know. The ongoing problem of how to "interpret" QM may be an
example of just a case: humans can conceptualise clearly enough to construct
a QM theory that works, but not clearly enough to construct one that resolves
the ambiguities of "interpretation." Proving that statement would require
one to show that there exists a concept C such that we can't conceive it. But
the paradox prevents such a proof. (To prove C exists, you have to
characterise it, and that's not possible if you can't conceive C.)

Your statement that any problem that can be posed can be solved is IMO a
truism, since any properly posed problem contains sufficient information to
allow its solution.

Quote:
What happens when an irresistable force encounters an immovable object?

There is the release of an infinite amount of energy. :-)

Actually, the puzzle is an example of an improperly posed problem, since a
force cannot exist without some carrier. So in actual fact there would be the
encounter of two infinitely large objects. Which is impossible.

Quote:
How can the significance of counterfactual mathematical theorems be
mapped to the underlying reality of our existence? Do heros in our fictional
books actually suffer fates? I've read the clever sounding: 'the solution to a
problem is found in the question' which is so general as to become trivial.

No, I don't think it's trivial, since examination of soluble problems shows
that this is precisely the case. Problems can't be solved until and unless
they can be stated so that "the answer is in the question." (See the
solutions to Zeno's paradoxes, which rely on restatement of Zeno's problems.
Or my restatement of the irresistible force - immovable object conundrum.) An
axiomatic system is the delineation of a universe of discourse. Once you have
your axioms, you know what sorts of questions can be asked and, subject to
Goedel's work and it extensions, which can be answered within it.

I think you're quite right in observing that ordinary language is not a
formal axiomatic system, and for that reason I think your claim that language
is "extensible" needs refinement. The puzzles you pose above show that
ordinary language is also conceptually anything but clear, and for this
reason, the claim that any problem that can be posed can be solved is true
IFF conceptual clarity is assumed in the posing of the problem.

But by the same token, my claim that human language is inadequate also needs
refining. I hope my comments have gone a small step or two towards that
goal.

--
Wolf Kirchmeir, Blind River ON Canada
"Nature does not deal in rewards or punishments, but only in consequences."
(Robert Ingersoll)
Eray Ozkural exa
Posted: Mon Feb 02, 2004 8:16 am
Guest
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message news:<mNeTb.20561$sF1.2117@newssvr25.news.prodigy.com>...
Quote:

I thought you might find this interesting since it is a bit obscure,

I found it interesting, and not only because it is obscure!

Cordially,

--
Eray
N
Posted: Mon Feb 02, 2004 2:08 pm
Guest
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message news:<mNeTb.20561$sF1.2117@newssvr25.news.prodigy.com>...
Quote:

English cannot be reduced to a consistent set of rules. Many have tried.
All have failed. Perhaps you should look into Noam Chomsky's attempts at
the task; search for references to "Transformational Grammar" for a
start. He appears to have begun with the assumption that [natural]
language can be modeled with a finite set of rules, but the last I saw on
the topic looked more like a proof that Goedel's Incompleteness Theorem
(q.v.) applies.

...It's not just the size of the vocabulary, but it's the
way the vocabulary is used. I.e., where the verbs, nouns, and modifiers
are placed and how some modifiers change the meaning of some words
differently than other words, etc.

The "rules" for explaining the grammar are not completely expressible in
formal terms which are less complex than the grammar itself. Any complete
description of the rules will end up *being* the rules, and vice versa.

I'd agree with that.


Quote:
The idea, like most good ideas, is simple. Suppose we have an
axiomatic theory formulated in terms of the primitive concepts
"line", "point", and "number". We're convinced that there isn't any
way of defining, say, "number" in terms of "line" and "point". But
how do we prove this? Well, if "number" could in fact be defined
in terms of "line" and "point", then for any two systems of objects
and relations satisfying our axioms, if they agree on the meaning
of "line" and "point", they must also agree on the meaning of
"number". So to prove that "number" can't be defined in terms of
"line" and "point" we exhibit two different systems of objects and
relations satisfying the axioms which agree on the meaning of
"line" and "point" but disagree on the meaning of "number".

This may seem very simple of me, but to me there is some similarity

between this explaination and the way that ordinals and cardinal
numbers might be expressed. Hmm.

N
Stephen Harris
Posted: Mon Feb 02, 2004 4:15 pm
Guest
"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:jbysxveflzcngvpbpna.hsgsja1.pminews@news1.sympatico.ca...
Quote:
On Fri, 30 Jan 2004 00:18:54 GMT, Stephen Harris wrote:

The issue under discussion is whether language is adequate. Language is
composed of words representing concepts.

I wish it were that simple.


I think it is that simple. I will present again the statement to which I
objected:

Wolf wrote;
"You may object that mathematics isn't what you mean by an extension
of language. But I would argue that mathematics is an extension of language,
and then some."

SH: Mathematics which includes reference ot Godel's Incompletness Theorem
(GIT) means formal mathematics, not a popular notion of
mathematics. Formal mathematics can be defined as "A set of formal
languages". If by language you meant formal language, then your
statement above reduces to: A formal language has relevance to the set
of formal languages. This is completely unexceptionable.

"but I would argue" means you are making some sort of stronger
claim. That natural language has an extension in formal mathematics and
then some. That theorems of formal mathematics apply to natural language.

Natural language evolved. It is not and never was a logical structure
filled/created with axioms. Grammarians making rules does not change natural
language into an artificial structure such as the artifical language,
Esperanto.

Theorems about formal systems have no bearing on natural language.

Tarski's Undefinability of Truth Theorem. TRUTH, the set of numbers which
encode true sentences of number theory, is not definable in number theory.
Since undefinable implies uncomputable,
there will never be a program which can decide, for each sentence of
number theory, whether the sentence is true or false.

Godel's First Incompleteness Theorem. Any adequate axiomatizable theory is
incomplete. In particular the sentence
"This sentence is not provable" is true but not provable in the theory.

I mentioned the irresistable force and immovable object not
existing in the same universe as a anolgoy to an
unconceivable concept. An improperly posed question in your terms.

Godelian Inc. has been used by J.R. Lucas and Roger Penrose
in "Shadows of The Mind" to argue against any strong notion
of AI being identically demonstrated to be the human mind.
A very failed notion of applying formal theorems to the real world.

Quote:
But by the same token, my claim that human language is inadequate also
needs
refining. I hope my comments have gone a small step or two towards that
goal.

--
Wolf Kirchmeir, Blind River ON Canada
"Nature does not deal in rewards or punishments, but only in
consequences."
(Robert Ingersoll)


Cosmic discovery is paradox stated -- scientific discovery is paradox
resolved,
by Arthur Koestler.

Stephen

G.A Edgar writes about GIT:
"It is a statement about the natural numbers, not about a theory.
The "incompleteness" refers to the fact that the set of axioms
is not enough to uniquely determine the natural numbers. Given
any (recursively enumerable) set of axioms for the natural numbers,
there are also additional models of those axioms other than the
"true" natural numbers. The so-called "non-standard" models."
Ron Peterson
Posted: Mon Feb 02, 2004 4:37 pm
Guest
lesterDELzick@worldnet.att.net (Lester Zick) wrote in message news:<40192598.97600656@netnews.att.net>...

Quote:
On 27 Jan 2004 21:28:01 -0800, Ron Peterson wrote:

Human languages are extensible, so I think that any problem that can
be posed can be explained. Does someone have an example of a problem
that can't be explained?

Human language is adequate for posing the problem and for posing the
solution whether or not the solution is achievable.

People that are color blind don't have the concept of color, but can
get the concept from those that aren't color blind. So the question is
whether there is some concept that humans don't know about that can
never be discovered.

--
Ron
Stephen Harris
Posted: Mon Feb 02, 2004 4:38 pm
Guest
"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:jbysxveflzcngvpbpna.hsgsja1.pminews@news1.sympatico.ca...
Quote:
On Fri, 30 Jan 2004 00:18:54 GMT, Stephen Harris wrote:

The issue under discussion is whether language is adequate. Language is
composed of words representing concepts.

I wish it were that simple.

But by the same token, my claim that human language is inadequate also
needs
refining. I hope my comments have gone a small step or two towards that
goal.

--
Wolf Kirchmeir, Blind River ON Canada
"Nature does not deal in rewards or punishments, but only in
consequences."
(Robert Ingersoll)



Well, maybe it is not that simple. I kept thinking you were talking about
the problem of knowing truth and attributing it to language inadequacy.

I found this page which makes neither of quite right:
http://www.utm.edu/research/iep/t/truth.htm#Can%20a%20Theory%20of%20Truth%20Avoid%20Paradox?

An adherent of the Semantic Theory will allow that there is, to be sure, a
powerful insight in the theories of linguistic truth. But, they will
counter, these linguistic theories are really shedding no light on the
nature of truth itself. Rather, they are calling attention to how we often
go about ascertaining the truth of noncontingent propositions. While it is
certainly possible to ascertain the truth experientially (and inductively)
of the noncontingent proposition that all aunts are females - for example,
one could knock on a great many doors asking if any of the residents were
aunts and if so, whether they were female - it would be a needless exercise.
We need not examine the world carefully to figure out the truth-value of the
proposition that all aunts are females. We might, for example, simply
consult an English dictionary. How we ascertain, find out, determine the
truth-values of noncontingent propositions may (but need not invariably) be
by nonexperiential means; but from that it does not follow that the nature
of truth of noncontingent propositions is fundamentally different from that
of contingent ones.

On this latter view, the Semantic Theory of Truth is adequate for both
contingent propositions and noncontingent ones. In neither case is the
Semantic Theory of Truth intended to be a theory of how we might go about
finding out what the truth-value is of any specified proposition. Indeed,
one very important consequence of the Semantic Theory of Truth is that it
allows for the existence of propositions whose truth-values are in principle
unknowable to human beings.

And there is a second motivation for promoting the Semantic Theory of Truth
for noncontingent propositions. How is it that mathematics is able to be
used (in concert with physical theories) to explain the nature of the world?
On the Semantic Theory, the answer is that the noncontingent truths of
mathematics correctly describe the world (as they would any and every
possible world).

The Linguistic Theory, which makes the truth of the noncontingent truths of
mathematics arise out of features of language, is usually thought to have
great, if not insurmountable, difficulties in grappling with this question."

Regards,
Stephen
Lester Zick
Posted: Mon Feb 02, 2004 6:59 pm
Guest
On 2 Feb 2004 13:37:35 -0800, ron@shell.core.com (Ron Peterson) in
comp.ai.philosophy wrote:

Quote:
lesterDELzick@worldnet.att.net (Lester Zick) wrote in message news:<40192598.97600656@netnews.att.net>...

On 27 Jan 2004 21:28:01 -0800, Ron Peterson wrote:

Human languages are extensible, so I think that any problem that can
be posed can be explained. Does someone have an example of a problem
that can't be explained?

Human language is adequate for posing the problem and for posing the
solution whether or not the solution is achievable.

People that are color blind don't have the concept of color, but can
get the concept from those that aren't color blind. So the question is
whether there is some concept that humans don't know about that can
never be discovered.

I sometimes wonder what someone blind from birth sees when trying to
visualize some relation. I don't know as there is any visualization in
terms comparable to what a sighted person sees. However I don't see
any way to address a concept that can never be discovered if we don't
know how or why it can never be discovered.

Regards - Lester
Stephen Harris
Posted: Mon Feb 02, 2004 10:21 pm
Guest
"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:jbysxveflzcngvpbpna.hsgsja1.pminews@news1.sympatico.ca...
Quote:
On Fri, 30 Jan 2004 00:18:54 GMT, Stephen Harris wrote:

The issue under discussion is whether language is adequate. Language is
composed of words representing concepts.

I wish it were that simple.


Please note the difference between the algorithmic (auotmatic procedure)
limitations which result from the computability and listability of formal
sytems and the not "fully attainable" notion of truth found in prospective
sets.
Though not fully attainable and incomplete have about the same meaning,
the methods of generation and recognition are not the same.

http://www.the-scientist.com/yr1990/dec/opin_901210.html

The Thoery of Everything-- What's Knowable and What's Not
By John D. Barrow

"Why is the world mathematical?" we ask.

But, on second thought, don't many of the things we encounter in everyday
life seem like almost anything but mathematics? Mathematics is relegated to
the description of a peculiar skeletal world that we are assured lies behind
mere appearances, a world that is simpler than the one in which we are daily
participants. Yet we find nothing mathematical about emotions and judgments,
about music or art. How then, when we speak of Theories of Everything and
pursue them with mathematics confident that all diversity will evaporate to
leave nothing but number, can we draw the line that divides those elusive
phenomena that are intrinsically nonmathematical from those that are
encompassed by a Theory of Everything? What are the things that cannot be
included in the physicist's conception of Everything?

The American logician John Myhill has proposed a metaphorical extension of
the lessons that we have learned from the theorems of G"del, Church, and
Turing about the scope and limitations of logical systems. The most
accessible and quantifiable aspects of the world have the property of being
computable: There exists a definite procedure for deciding if any given
candidate either does or does not possess the required property. Human
beings can be trained to respond to the presence or absence of this
property. Truth is not in general such a property of things; being a prime
number is.

A more elusive set of properties are those that are being merely listable.
For these, we can construct a procedure that will list all the quantities
possessing the required property (even though you might have to wait an
infinite time for the listing to end), but there is no way of systematically
generating all the entities that do not possess the required property. Most
logical systems have the property of being listable but not computable: all
their theorems can be listed but there is no automatic procedure for
inspecting a statement and deciding whether or not it is a theorem.

If the mathematical world had no G"del theorem, then every property of any
system that contained arithmetic would be listable. We could write a
definite program to carry out every activity. Without the restrictions of
Turing and Church on computability, every property of the world would be
computable. The problem of deciding whether this page is an example of
grammatical English is a computable one. The words can be checked against a
reference dictionary and the grammatical constructions employed could be
checked sequentially. But the page of text could still be meaningless to a
reader who did not know English. As time passes, this reader could learn
more of the English language and more and more of the page would become
meaningful to him. But there is no way of predicting ahead of time which
bits of page they will be. The property of meaningfulness is thus listable
but not computable. On the other hand, the question of whether this page
might be something the reader might want to read in the future is a listable
but not a computable property.

Not every feature of the world is either listable or computable. For
example, the property of being a true statement is neither listable nor
computable. One can approximate the truth to greater and greater accuracy by
introducing more and more rules of reasoning and adding further axiomatic
assumptions, but it can never be captured by any finite set of rules. These
attributes that have neither the property of listability nor that of
computability--the "prospective" features of the world--are those that we
cannot recognize or generate by a series or sequence of logical steps. They
witness to the need for ingenuity and novelty; for they cannot be
encompassed by any finite collection of rules or laws. Beauty, simplicity,
truth; these are all properties that are prospective. There is no magic
formula that can be counted upon to generate all the possible varieties of
the attributes. They are never fully attainable. No program or equation can
generate all beauty or all ugliness; indeed, there is no sure way of
recognizing either of these attributes when you see them."



Regards,

Stephen
Eray Ozkural exa
Posted: Tue Feb 03, 2004 4:09 am
Guest
"Stephen Harris" <stephen.p.harris@sbcglobal.net> wrote in message news:<%5zTb.19094$_j3.15019@newssvr27.news.prodigy.com>...
Quote:
"Wolf Kirchmeir" <wwolfkir@sympatico.can> wrote in message
news:jbysxveflzcngvpbpna.hsgsja1.pminews@news1.sympatico.ca...
On Fri, 30 Jan 2004 00:18:54 GMT, Stephen Harris wrote:

The issue under discussion is whether language is adequate. Language is
composed of words representing concepts.

I wish it were that simple.


I think it is that simple. I will present again the statement to which I
objected:

Wolf wrote;
"You may object that mathematics isn't what you mean by an extension
of language. But I would argue that mathematics is an extension of language,
and then some."

Do you guys realize that the communicative written and oral language
of mathematics is just another natural language while mathematics
itself is more than just communication?

Likewise, common sense processing is more than a computational means
to transfer concise common-sense statements (language). What's
surprising about that?

The logicist tradition has almost entirely failed on these accounts
because it turned out that mathematics is not the syntax of narrow
language. Neither do the truth values of semantic expressions have any
significance beyond being a tiny aspect of meaning in the analyzing
entity's mind. Therefore, I'm having great difficulty in following
your discussion. I'm going to have a deeper look at this last fringe
of the thread and make some comments, though.

Regards,

--
Eray
 
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