Newsportal USENET - Re: True on the basis of meaning --- Good job Richard ! ---Socratic method MTT

Re: True on the basis of meaning --- Good job Richard ! ---Socratic method MTT

Sujet : Re: True on the basis of meaning --- Good job Richard ! ---Socratic method MTT
De : polcott333 (at) *nospam* gmail.com (olcott)
Groupes : sci.logic comp.theory
Date : 29. May 2024, 16:00:44

Autres entêtes

Organisation : A noiseless patient Spider
Message-ID : <v37ced$15rjf$1@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
User-Agent : Mozilla Thunderbird

On 5/29/2024 6:31 AM, Richard Damon wrote:

On 5/28/24 11:54 PM, olcott wrote:
On 5/28/2024 10:38 PM, Richard Damon wrote:
On 5/28/24 10:39 PM, olcott wrote:
On 5/28/2024 9:04 PM, Richard Damon wrote:
On 5/28/24 10:59 AM, olcott wrote:
On 5/28/2024 1:59 AM, Mikko wrote:
On 2024-05-27 14:34:14 +0000, olcott said:
>
?- LP = not(true(LP)).
LP = not(true(LP)).
>
?- unify_with_occurs_check(LP, not(true(LP))).
false.
>
In other words Prolog has detected a cycle in the directed graph of the
evaluation sequence of the structure of the Liar Paradox. Experts seem
to think that Prolog is taking "not" and "true" as meaningless and is
only evaluating the structure of the expression.
>
The words "not" and "true" of Prolog are meaningful in some contexts
but not above. The word "true" is meaningful only when it has no arguments.
>
>
That Prolog construes any expression having the same structure as the
Liar Paradox as having a cycle in the directed graph of its evaluation
sequence already completely proves my point. In other words Prolog
is saying that there is something wrong with the expression and it must
be rejected.
>
But Prolog doesn't support powerful enough logic to handle the system like Tarski and Godel are talking about.
>
The fact that Prolog just rejects it shows that.
>
>
Your ignorance is no excuse.
>
What ignorance?
>
>
The fact that you assert that you know the underlying details of
https://www.swi-prolog.org/pldoc/man?predicate=unify_with_occurs_check/2
without even glancing at the documentation and write-up in Clocksin and
Mellish seems to be willful ignorance.
What makes you think that? I understand how Prolog works, and why it only models relatively simple logic systems, because it just can't handle the higher order logical primitives. It can't even handle full first order logic.

Your explanation of
https://www.swi-prolog.org/pldoc/man?predicate=unify_with_occurs_check/2
was ridiculous.
BEGIN:(Clocksin & Mellish 2003:254)
Finally, a note about how Prolog matching sometimes differs from the unification used in Resolution. Most Prolog systems will allow you to satisfy goals like:
equal(X, X).
?- equal(foo(Y), Y).
that is, they will allow you to match a term against an uninstantiated
subterm of itself. In this example, foo(Y) is matched against Y, which
appears within it. As a result, Y will stand for foo(Y), which is
foo(foo(Y)) (because of what Y stands for), which is foo(foo(foo(Y))),
and so on. So Y ends up standing for some kind of infinite structure.
Note that, whereas they may allow you to construct something like this,
most Prolog systems will not be able to write it out at the end.
According to the formal definition of Unification, this kind of
“infinite term” should never come to exist. Thus Prolog systems that
allow a term to match an uninstantiated subterm of itself do not act
correctly as Resolution theorem provers. In order to make them do so, we
would have to add a check that a variable cannot be instantiated to
something containing itself. Such a check, an occurs check, would be
straightforward to implement, but would slow down the execution of
Prolog programs considerably. Since it would only affect very few
programs, most implementors have simply left it out 1. 1 The Prolog standard states that the result is undefined if a Prolog
system attempts to match a term against an uninstantiated subterm of
itself, which means that programs which cause tills to happen will
not be portable. A portable program should ensure that wherever an
occurs check might be applicable the built-in predicate
unify_with_occurs_check/2 is used explicitly instead of the normal
unification operation of the Prolog implementation. As its
name suggests, this predicate acts like =/2 except that it fails if
an occurs check detects an illegal attempt to instantiate a variable.
END:(Clocksin & Mellish 2003:254)
Clocksin, W.F. and Mellish, C.S. 2003. Programming in Prolog Using the ISO Standard Fifth Edition, 254. Berlin Heidelberg: Springer-Verlag.
--
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer

Les messages affichés proviennent d'usenet.

Date	Sujet	#	Auteur
11 May 24	True on the basis of meaning	209	olcott
11 May 24	Re: True on the basis of meaning	208	Richard Damon
11 May 24	Re: True on the basis of meaning	207	olcott
11 May 24	Re: True on the basis of meaning	206	Richard Damon
11 May 24	Re: True on the basis of meaning	205	olcott
11 May 24	Re: True on the basis of meaning	1	Richard Damon
12 May 24	Re: True on the basis of meaning	203	Mikko
12 May 24	Re: True on the basis of meaning	202	olcott
12 May 24	Re: True on the basis of meaning	201	Mikko
12 May 24	Re: True on the basis of meaning	200	olcott
12 May 24	Re: True on the basis of meaning	183	Richard Damon
12 May 24	Re: True on the basis of meaning	182	olcott
12 May 24	Re: True on the basis of meaning	181	Richard Damon
12 May 24	Re: True on the basis of meaning	180	olcott
12 May 24	Re: True on the basis of meaning	163	Richard Damon
12 May 24	Re: True on the basis of meaning	162	olcott
13 May 24	Re: True on the basis of meaning	161	Richard Damon
13 May 24	Re: True on the basis of meaning	160	olcott
13 May 24	Re: True on the basis of meaning	159	Richard Damon
13 May 24	Re: True on the basis of meaning	158	olcott
13 May 24	Re: True on the basis of meaning	2	olcott
13 May 24	Re: True on the basis of meaning	1	Richard Damon
13 May 24	Re: True on the basis of meaning	155	Richard Damon
13 May 24	Re: True on the basis of meaning	154	olcott
13 May 24	Re: True on the basis of meaning	153	Richard Damon
13 May 24	Re: True on the basis of meaning	152	olcott
13 May 24	Re: True on the basis of meaning	151	Richard Damon
13 May 24	Re: True on the basis of meaning --- Good job Richard !	150	olcott
14 May 24	Re: True on the basis of meaning --- Good job Richard !	149	Richard Damon
14 May 24	Re: True on the basis of meaning --- Good job Richard !	2	olcott
14 May 24	Re: True on the basis of meaning --- Good job Richard !	1	Richard Damon
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	146	olcott
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	145	Richard Damon
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	4	olcott
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	3	Richard Damon
14 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
15 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
15 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
15 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
15 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	4	olcott
15 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	3	Richard Damon
15 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	4	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	immibis
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	126	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	125	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	124	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	123	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	5	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	4	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	3	olcott
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	Richard Damon
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	115	olcott
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	114	Richard Damon
16 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	113	olcott
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	112	Richard Damon
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	111	olcott
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	110	Richard Damon
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	109	olcott
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	108	Richard Damon
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	105	olcott
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	104	Richard Damon
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	103	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	102	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	101	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	100	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	99	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	98	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	97	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	96	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	95	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	94	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	93	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	92	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	91	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	90	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	1	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	87	olcott
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	86	Richard Damon
18 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	85	olcott
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	84	Richard Damon
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	83	olcott
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	82	Richard Damon
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	81	olcott
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	80	Richard Damon
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	79	olcott
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	63	Mikko
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	62	olcott
20 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	61	Mikko
20 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	60	olcott
19 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	15	Richard Damon
17 May 24	Re: True on the basis of meaning --- Good job Richard ! ---Socratic method	2	olcott
13 May 24	Re: True on the basis of meaning	16	Mikko
13 May 24	Re: True on the basis of meaning --- Tarski	16	olcott