Re: Unexpected Hanging

2013-09-18 Thread Telmo Menezes
On Tue, Sep 17, 2013 at 7:11 PM, Bruno Marchal marc...@ulb.ac.be wrote:

 On 17 Sep 2013, at 11:49, Telmo Menezes wrote:

 On Mon, Sep 16, 2013 at 2:35 PM, Bruno Marchal marc...@ulb.ac.be wrote:


 On 15 Sep 2013, at 10:37, Telmo Menezes wrote:

 On Sun, Sep 15, 2013 at 9:54 AM, Bruno Marchal marc...@ulb.ac.be
 wrote:



 On 14 Sep 2013, at 04:25, Craig Weinberg wrote:



 snip


 With computationalism, it is more easy and clear. What exists, at the
 ontological level, is what make true a sentence like ExP(x). So number
 exists, once we assume arithmetic or combinators ..., because they make
 true
 Ex(x = x). And then (and only then), we can define different notions of
 epistemological existence, and they will be as many notion of existence
 as
 we have modalities (notably those coming from incompleteness, as they are
 unavoidable.  They will make true proposition with the shape [] Ex []
 P(x),
 or [] Ex []  P(x), etc...


 Ok, nice. I'm slowly getting used to modal logic. It's a weird thing
 to learn because it seems to require removing things from your thought
 process rather than adding them (at least for me). It's hard because
 it's simple.



 That's the idea of math and logic. It is abstraction. it simplifies, indeed.








 So we will get notions of psychological
 existence, physical existence, etc.


 Ok, but what is the computational substrate?


 *any* first order logical specification of *any* turing universal system
 will do.

 I suggest a very tiny part of arithmetic, but the S and K combinators will
 do as well, or the Unitary group, etc.







 There is still a
 dissatisfaction in having to just accept it. I guess one can go back
 to the idea of God, in a way.


 God created 0, and its successors, and then said to them add, and multiply.

Ok. I'm agnostic, so I don't cringe at this sort of statement. I guess
I'm also an atheist, because I reject the idea of anthropomorphised
gods, but that's irrelevant here. My dissatisfaction with this is
empirical: god has been used so many times to cover up for our lack of
knowledge that, when confronted with current lack of knowledge and one
hears the word god one tends to become suspicious. On the other
hand, if there is something fundamental we provably can't know, I
guess it's fair enough to call that thing god. But I think we should
be extra-extra-careful before making that move.

 All the rest is what emerge from a universal matrix of cohering
 Computations/dreams (1-computations, 3-computation) provably existing as a
 consequence of the addition and multiplication laws.

 If you can believe that 17 is prime, independently of you, then you can
 understand, that, if you assume computationalism, arithmetic, as seen from
 different internal self-referential view, contains such universal matrix,
 or the universal dovetailing or any sigma_1 complete set of number, or a
 Post creative set, a universal purpose computer, reflecting itself.

 Arithmetic provides the block-mindscape. The existence and unicity of a
 block multiverse emerging from it is basically unsolved, nor even yet made
 enough precise.





 It's just what is. But then this is an
 ontological statement. Does this substrate exist? You can not use the
 previous reasoning to support its existence, or can you?


 I can't.  I only justify why machines develop such beliefs, even for good
 (relatively correct for they local purpose in their probable history)
 reason. Just that the physical reality is not the fundamental reality. The
 physical reality is a complex self-referential sum made by a universal
 machine/number, and selected or varied through first person (sometimes
 plural) experiences.

 There is no substrate (in that picture). Just dreams, or limit on
 computations, probably related to (Turing) Universal group, braids, as the
 empirical evidences suggest, but that is what we must recover from the
 machine looking inside (in different ways corresponding to the intensional
 variants, the arithmetical hypostases).







 Even events seen in dreams get some
 notion of existence, for example.


 That's nice. I even have problems with statements like batman doesn't
 exist.


 Really?

 I will send you a video!



 Doesn't he, in some sense?


 Certainly, in many sense. He has real cousins, like jetman:
 http://www.youtube.com/watch?gl=BEv=x2sT9KoII_M

A batman with a french accent! Coincidence?


 And certainly not, in some common sense.

 Here, with comp, it is easy at the start, only 0, s(0), s(s(0), ... exist.

 The rest will come from the many relationships the number inherits from the
 + and * laws. (+ the comp invariance of consciousness manifestation and
 experience for the digital substitution at some level). That gives the
 relative perceptions, the dreams, the beliefs, and (but only God knows), the
 truth.

 If we don't recover common sense existence, we fail. But unless comp is
 false, why should it contradicts common sense? Thanks to Everett we do have
 evidence of sharable 

Implicate order

2013-09-18 Thread Russell Standish
I've just been reading a book that I procured at a school fete called
Science, Order and Creativity, by David Bohm and David Peat.

I had read Wholeness and the implicate order in my youth, which on
the whole was confusing and unsatisfying. In many ways, this book is
too. Yet, I can't quite shake the feeling when reading that there must
be some connection between Bohm's implicate order and Hofstaedter's
strange loops, and so that he might be onto something important for an
understanding of creativity and consciousness. But his books leave me
unsatisfied and hungry. For one thing, there is too little contact
with the mathematics of QM.

Does anyone know of a good introduction to Bohm's ideas? It's clear I'm
not going to get it from Bohm himself.

Cheers

-- 


Prof Russell Standish  Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Professor of Mathematics  hpco...@hpcoders.com.au
University of New South Wales  http://www.hpcoders.com.au


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Re: Unexpected Hanging

2013-09-18 Thread Bruno Marchal


On 17 Sep 2013, at 19:11, meekerdb wrote:


On 9/17/2013 1:13 AM, Bruno Marchal wrote:


On 16 Sep 2013, at 19:54, meekerdb wrote:


On 9/16/2013 5:35 AM, Bruno Marchal wrote:
With computationalism, it is more easy and clear. What exists, at  
the ontological level, is what make true a sentence like  
ExP(x). So number exists, once we assume arithmetic or  
combinators ..., because they make true Ex(x = x).


But this notion of 'exists' as 'satisfying a propositional  
function' is completely different from kicks back when I kick it  
existence.


Why? It kicks back too, like in credit carts.


My credit card is made of plastic - and all the processes that  
depend on it's number are realized in stuff that kicks back too.


But that will do in the relevant way thanks to the abstract truth that  
factorizing large number takes time. The plastic of the card plays  
only a role of support.






And with comp it kicks back in making you dreaming of things  
kicking back, sometimes in persistent way.




You say number exists, once we assume arithmetic; which is about  
as useful as hobbits exist once we assume middle Earth.


Not at all. Arithmetic asks for very few rather clear assumptions,  
and it explains a lot, as all physical theories assumes it.


Arithmetic is a model of countable objects, but it's not that clear  
that every number has a successor correctly models countable  
objects.


?





Then with comp we need, nor can use anything more. Hobbits and  
middle Earth assumes many things and explain nothing. I suspect you  
are a little bit disingenuous, isn't it?


I naturally took an extreme example to make my point.


I do that often too, but here it weakened your point. Everyone (except  
Sunday philosopher) agree on 0, and its successor. That is typically  
not the case for Hobbits and Middle Earth.


Bruno





Brent



Bruno



http://iridia.ulb.ac.be/~marchal/



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Re: How PIP solves the hard problem of consciousness

2013-09-18 Thread Bruno Marchal


On 17 Sep 2013, at 19:17, Craig Weinberg wrote:




On Tuesday, September 17, 2013 12:40:27 PM UTC-4, freqflyer07281972  
wrote:
Thanks Craig, you've articulated quite well a number of difficulties  
in approaching the hard problem, IMHO. I was reading this article in  
the SEP and thought of your approach:

http://plato.stanford.edu/entries/nishida-kitaro/

Thanks, cool


Look especially under his glossing of the idea of 'pure experience.'  
It reminds me of your MR/PIP and seems quite congenial to it.


Whaddaya think?

Yes, I agree his 'pure experience' matches my 'sense' in a lot of  
the important ways. I use the opposite assumption about it being  
'MU' or 'nothing'. It is tempting to conceive of the limitation of  
our local experience and propose 'nothing' beyond it, but I think  
that it works much better when we invert it and suppose that beyond  
local experience is 'everythingness' and 'eternity'.


I particularly recognize Pure experience launches the dynamic  
process of reality that differentiates into subjective and objective  
phenomena on their way to a higher unity, and the recapture of our  
unitary foundation is what Nishida means by the Good.


This is the same as my model, although I would say that the  
differentiation first diverges from pure experience to subjective  
qualia, where objective qualia emerge from the public  
intersubjectivity (quanta). His concept of higher unity is Good  
while mine would see good as only a particular measure of subjective  
'likeness' and the actual higher unity I see as Significance...the  
reconciliation of diffracted sense as it is separated from the  
entropy of scaled distance and time.


Thanks,
Craig


On Monday, September 16, 2013 1:35:27 PM UTC-4, Craig Weinberg wrote:
The Hard Problem of consciousness asks why there is a gap between  
our explanation of matter, or biology, or neurology, and our  
experience in the first place. What is it there which even suggests  
to us that there should be a gap, and why should there be a such  
thing as experience to stand apart from the functions of that which  
we can explain.


Materialism only miniaturizes the gap and relies on a machina ex  
deus (intentionally reversed deus ex machina) of ‘complexity’ to  
save the day. An interesting question would be, why does dualism  
seem to be easier to overlook when we are imagining the body of a  
neuron, or a collection of molecules? I submit that it is because  
miniaturization and complexity challenge the limitations of our  
cognitive ability, we find it easy to conflate that sort of  
quantitative incomprehensibility with the other incomprehensibility  
being considered, namely aesthetic* awareness. What consciousness  
does with phenomena which pertain to a distantly scaled perceptual  
frame is to under-signify it. It becomes less important, less real,  
less worthy of attention.


Idealism only fictionalizes the gap. I argue that idealism makes  
more sense on its face than materialism for addressing the Hard  
Problem, since material would have no plausible excuse for becoming  
aware or being entitled to access an unacknowledged a priori  
possibility of awareness. Idealism however, fails at commanding the  
respect of a sophisticated perspective since it relies on naive  
denial of objectivity. Why so many molecules? Why so many terrible  
and tragic experiences? Why so much enduring of suffering and  
injustice? The thought of an afterlife is too seductive of a way to  
wish this all away. The concept of maya, that the world is a veil of  
illusion is too facile to satisfy our scientific curiosity.


Dualism multiplies the gap. Acknowledging the gap is a good first  
step, but without a bridge, the gap is diagonalized and stuck in  
infinite regress. In order for experience to connect in some way  
with physics, some kind of homunculus is invoked, some third force  
or function interceding on behalf of the two incommensurable  
substances. The third force requires a fourth and fifth force on  
either side, and so forth, as in a Zeno paradox. Each homunculus has  
its own Explanatory Gap.


Dual Aspect Monism retreats from the gap. The concept of material  
and experience being two aspects of a continuous whole is the best  
one so far – getting very close. The only problem is that it does  
not explain what this monism is, or where the aspects come from. It  
rightfully honors the importance of opposites and duality, but it  
does not question what they actually are. Laws? Information?


Panpsychism toys with the gap.Depending on what kind of panpsychism  
is employed, it can miniaturize, multiply, or retreat from the gap.  
At least it is committing to closing the gap in a way which does not  
take human exceptionalism for granted, but it still does not attempt  
to integrate qualia itself with quanta in a detailed way. Tononi’s  
IIT might be an exception in that it is detailed, but only from the  
quantitative end. The hard problem, 

Re: What gives philosophers a bad name?

2013-09-18 Thread Bruno Marchal


On 17 Sep 2013, at 19:39, John Clark wrote:


On Mon, Sep 16, 2013  Bruno Marchal marc...@ulb.ac.be wrote:

  So you are suggesting that a thing like broken glass is made of  
numbers


  I was just saying that things are not made up of things. A  
broken glass is NOT made of number. That has no meaning at all. What  
happens is that addition and multiplication of natural numbers  
emulate dreams, which might be dream of a broken glass.


OK. How is that any different from saying broken glass is made of  
numbers?



It would be like saying that the relation between matter and energy (E  
= mc^2) is made of ink or of pixels.






 don't tell me there is no such thing as a thing, that's just more  
gibberish.


 It is a matter of tedious, and not so simple, exercise to see that  
the computations exist in some definite sense when we postulate  
arithmetic. (This is done in good textbook, and very well done in  
Epstein  Carnielli, but also in Boolos  Jeffrey). Physical things  
then appears as stable percept


And concerning broken glass I said in my September 11 post It must  
have stable properties of some sort or I wouldn't be able to  
identify it as a thing.


I agree. But a computation can provide stable things for another  
computations or subcomputations.

Then arithmetical truth is rather stable itself.





 by persons living those dreams.

OK. Therefore the physical universe and the physical things in it  
exist.


That makes sense. Just that such an existence is a first person plural  
construction. This exists for all universal system which can run  
different computations in parallel, and makes them interact.






  Make up your mind! First you say everything is the process of  
natural numbers in relative computations and then you say  
digital machines, which are defined in term of number relations  
are an exception to this because what they do is not a process.  
The sum of number relations is not a process?? None of this makes  
any sense to me.


 Some number relation defines some machines, or some programs,  
which are static entities.
*Other number relations, involving the preceding one, defines  
computations, or processes,


Name a number relation that does not involve a computation or some  
other process!


It is difference between a number j used as a name for a program, like  
in the arithmetical relation phi_j(k) = r, and a number coding a  
computation, that is some sequence like phi_j(k)^1, phi_j(k)^2,  
phi_j(k)^3, phi_j(k)^4, phi_j(k)^5, phi_j(k)^6, phi_j(k)^7, ...


Here phi_i is an enumeration of the partial computable functions, k is  
a natural number input, and ^s means the sth step of the computation.





 A machine, in that setting is basically one number, relative to  
some universal number.


Relative? A relation needs at least 2 things,


Yes. The two things are
1) the number playing the role of the machine (the j in phi_j(k)), and
2) the universal system (seen as a number, unless we start in the  
basic system assumed, like arithmetic, or the combinators) which  
computes phi_j(k).


You can look at the Matiyasevitch book for a nice implementation of  
arbitrary Turing machine *and*  their computations (seen as something  
very dynamic) in the terms of Diophantine equations (since as very  
static). That can help. Providing examples is very long and technical,  
alas, but we will come back on this most probably.





and  some sort of computation with them.


Absolutely,

Bruno


http://iridia.ulb.ac.be/~marchal/



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Re: Unexpected Hanging

2013-09-18 Thread Bruno Marchal


On 17 Sep 2013, at 19:46, Craig Weinberg wrote:




On Tuesday, September 17, 2013 6:07:23 AM UTC-4, telmo_menezes wrote:
On Mon, Sep 16, 2013 at 7:47 PM, Craig Weinberg whats...@gmail.com  
wrote:



 On Saturday, September 14, 2013 5:53:01 AM UTC-4, telmo_menezes  
wrote:


 On Fri, Sep 13, 2013 at 12:06 PM, Craig Weinberg  
whats...@gmail.com

 wrote:
 
 
  On Friday, September 13, 2013 5:31:40 AM UTC-4, telmo_menezes  
wrote:

 
  On Thu, Sep 12, 2013 at 5:47 PM, Craig Weinberg  
whats...@gmail.com

  wrote:
   Which reasoning is clearly false?
  
   Here's what I'm thinking:
  
   1) The conclusion I won't be surprised to be hanged Friday  
if I am

   not
   hanged by Thursday creates another proposition to be  
surprised

   about.
   By
   leaving the condition of 'surprise' open ended, it could  
include

   being
   surprised that the judge lied, or any number of other soft
   contingencies
   that could render an 'unexpected' outcome.
 
  Ok but that's not the setup. The judge did not lie and there  
are no
  soft contingencies. The surprise is purely from not having  
been sure
  the day of the execution was the one when somebody knocked at  
the door
  at noon. Even if you allow for some soft contingencies, I  
believe the

  paradox still holds.
 
 
  I don't understand why it's a paradox and not just  
contradiction. If I

  say
  'you're going to die this week and it's going to be a surprise  
when',

  that
  is already a contradiction.

 Ok, after a good amount of thought, I have come to agree with this.
 The judge lied. You convinced me! :)


 Ah cool! Thanks for posting the problem also, it helped me  
resurrect some

 lost mathematical-logical ability.


 (with due credit to Alberto and
 Brent, who also helped convince me). A more honest statement  
would be

 you're going to die this week and it will probably be a surprise
 when, or, you'll probably die this week and it will be a  
surprise if

 you do.

 My thought process involves reducing the thing to a game. There  
are 5
 turns in the game, and the attacker has to choose one of those  
turns
 to press a button. The defender also has a button, and its goal  
is to

 predict the action of the attacker. If both press the button. the
 defender wins. If only the attacker pressers the button, the  
attacker

 wins. Otherwise the game continues. The system is automated so that
 the attacker button is automatically pressed. Now the attacker  
(judge)
 is making the claim that he can always win this game. He cannot,  
there

 is no conceivable algorithm that guarantees this. Playing multiple
 instances of the game, I would guess the optimal strategy for the
 attacker is to chose a random turn, including the last. This will
 offer 20% of the games to the defender, but there's nothing  
better one

 can do.

 I read your post and now I think I understand you positions better.


 Nice.


 I
 am not convinced, but I will grant you that they are not easily
 attackable. On the other hand, this could be because they are
 equivalent to Carl Sagan's invisible dragon in the garage or, as
 Popper would put it, unfalsifiable. Do you care about  
falsifiability?



 Falsifiability is nice - especially in public-facing physics, but  
since
 falsification itself is a sensory experience, we should not insist  
on the
 same kind of falsifiability for private physics that we have in  
public

 physics.

Alright. Personal or 1p experiences are probably outside the realm of
phenomena that can be investigated under Popperian science. I think
this is something that many of us can agree with, independently of
accepting/rejecting comp, for example. I think this is also what
characterises hard-core positivists: they either find 1p reality
irrelevant or even reject its existence.


Which makes sense, since from that kind of fundamentalist 3p  
perspective, we can only take consciousness for granted. From there,  
we can either admit or deny that we are taking it for granted, and  
if we admit it, then we would want to minimize the significance of  
that.



 If so, can you conceive of some experiment to test what you're
 proposing?


 There may not be a test, so much as accumulating a body of  
understanding by
 correlating uses of information and qualities of sensation. It's  
more at the

 hypothesis stage than the testing stage.



 The symbol grounding problem haunted me before I had a name for it.
 It's a very intuitive problem indeed. I tend to believe that the
 answer will actually look something like an Escher painting.  
Assuming
 that neuroscience is enough, one can imagine the coevolution of  
neural
 firing patterns with environmental conditions. This can lead to  
neural

 firing patterns that correlate with higher abstractions -- the
 symbols. Why not?


 Still there's the hard problem. Why would neural firing patterns  
have a

 smell?

I don't know! But I think the mystery is not so much how symbols
appear or why they appear. Computers can do 

Re: What gives philosophers a bad name?

2013-09-18 Thread Bruno Marchal


On 18 Sep 2013, at 04:12, chris peck wrote:


Hi John

 Exactly, Newton and Darwin and Einstein didn't need Popper to  
tell them how to get knowledge out of nature, and absolutely no  
change in how science was done happened in 1934, the year Popper's  
book was published. None whatsoever.


Newton and Darwin would have had problems if they had of needed  
Popper given they worked before he was even born. Sometimes I read  
your posts and just think your belching wind.


Popper was not trying to explain to people like Einstein how to 'get  
knowledge out of nature'. You're basing your entire argument on a  
straw man. In fact, he used Einstein as a paradigm example of how to  
conduct science properly. But what of Adler, Freud or Marx? All  
these people claimed their theories to be scientific too and earnt a  
whole lot of credit for that, but where they scientific? Their  
theories could be contrasted with Einstein's in so far as where  
Einstein derived 'bold and risky' observational predictions which  
could be falsified; neither Freud, Adler nor Marx did.


You say that this demarcation principle has had no influence in  
science. Within Psychology however, for better or worse,  
Psychoanalysis is now perceived as a faintly absurd artifact of  
history. No one gets hot under the collar about penis envy anymore.  
Why? Because psychoanalysis doesn't make falsifiable predictions.  
There has been a cognitive and neuro-scientific 'revolution' which  
has striven hard to base psychology on more empirically falsifiable  
foundations.


In physics there is a debate about whether string theory (or string  
theory if you must shake your rattle, John) deserves all the  
funding it receives. What is at the core of the debate?: Does it  
matter that it fails to make falsifiable predictions? Should other  
theories (quantum loop gravity) which potentially offer more scope  
for falsifiability receive a greater proportion of the available  
resources.


Go back a hundred years or so and no-one gave a toss about any of  
that, so has Popper and the movement he spearheaded had an effect?  
Of course it has. Its pompous boneheaded bullshit to suggest  
otherwise.



If we agree, with Popper, that a theory needs to be falsifiable to be  
interesting, then Popper's theory is interesting, because, strictly  
speaking, it has been refuted, by John Case and Ngo-Manguelle:


CASE J.  NGO-MANGUELLE S., 1979, Refinements of inductive inference  
by Popperian
machines. Tech. Rep., Dept. of Computer Science, State Univ. of New- 
York, Buffalo.


By accepting that an inductive inference machine proposes, from time  
to time, unfalsifiable theories, you enlarge non trivially the class  
of phenomena that the machine can recognize, and build correct  
theories about.


Note the (slight) paradox here.

Bruno






Date: Tue, 17 Sep 2013 13:39:10 -0400
Subject: Re: What gives philosophers a bad name?
From: johnkcl...@gmail.com
To: everything-list@googlegroups.com

On Mon, Sep 16, 2013  Bruno Marchal marc...@ulb.ac.be wrote:

  So you are suggesting that a thing like broken glass is made of  
numbers


  I was just saying that things are not made up of things. A  
broken glass is NOT made of number. That has no meaning at all. What  
happens is that addition and multiplication of natural numbers  
emulate dreams, which might be dream of a broken glass.


OK. How is that any different from saying broken glass is made of  
numbers?


 don't tell me there is no such thing as a thing, that's just more  
gibberish.


 It is a matter of tedious, and not so simple, exercise to see that  
the computations exist in some definite sense when we postulate  
arithmetic. (This is done in good textbook, and very well done in  
Epstein  Carnielli, but also in Boolos  Jeffrey). Physical things  
then appears as stable percept


And concerning broken glass I said in my September 11 post It must  
have stable properties of some sort or I wouldn't be able to  
identify it as a thing.


 by persons living those dreams.

OK. Therefore the physical universe and the physical things in it  
exist.


  Make up your mind! First you say everything is the process of  
natural numbers in relative computations and then you say  
digital machines, which are defined in term of number relations  
are an exception to this because what they do is not a process.  
The sum of number relations is not a process?? None of this makes  
any sense to me.


 Some number relation defines some machines, or some programs,  
which are static entities.
*Other number relations, involving the preceding one, defines  
computations, or processes,


Name a number relation that does not involve a computation or some  
other process!


 A machine, in that setting is basically one number, relative to  
some universal number.


Relative? A relation needs at least 2 things, and  some sort of  
computation with them.


  John K Clark


--
You received this message because you are 

Re: Unexpected Hanging

2013-09-18 Thread Bruno Marchal


On 18 Sep 2013, at 05:03, Craig Weinberg wrote:




On Sunday, September 15, 2013 3:54:24 AM UTC-4, Bruno Marchal wrote:

On 14 Sep 2013, at 04:25, Craig Weinberg wrote:




On Friday, September 13, 2013 9:42:54 AM UTC-4, Bruno Marchal wrote:

On 12 Sep 2013, at 18:22, Craig Weinberg wrote:




On Thursday, September 12, 2013 11:56:12 AM UTC-4, Bruno Marchal  
wrote:


On 12 Sep 2013, at 11:33, Telmo Menezes wrote:

 Time for some philosophy then :)

 Here's a paradox that's making me lose sleep:
 http://en.wikipedia.org/wiki/Unexpected_hanging_paradox

 Probably many of you already know about it.

 What mostly bothers me is the epistemological crisis that this
 introduces. I cannot find a problem with the reasoning, but it's
 clearly false. So I know that I don't know why this reasoning is
 false. Now, how can I know if there are other types of reasoning  
that

 I don't even know that I don't know that they are correct?


Smullyan argues, in Forever Undecided, rather convincingly, that  
it is

the Epimenides paradox in disguise,

It's the symbol grounding problem too. From a purely quantitative  
perspective, a truth can only satisfy some condition. The  
expectation of truth being true is not a condition of arithmetic  
truth, it is a boundary condition that belongs to sense.


i think you mix first person truth, that we can sometimes apprehend  
(like knowing that we are conscious here and now), and third person  
truth, which does not depend of any entity *sensing* them.


How do you justify the assumption of entities that do not depend on  
any phenomenological participation though?


That is called realism. I guess you know I am realist about facts  
like 14 is not prime and the like. We have discussed already on  
that, and I think, agree that we disagree on that.


I don't see any realism in assuming anything that is disconnected  
from all forms of phenomenology. How would such a thing be part of a  
universe?


That depends what you mean by universe.
By definition, realism assumes something which can be disconnected  
from phenomenology, but which can be connected to it for some occasion.











Certainly there are truths which are independent of *our* sensing  
as individuals, or as human beings, or as fleshy objects or  
temporal spans of felt experience, but how can we know, or rather  
why should we jump to conclusions that there are things that simply  
'are' independently of a sensed experience (note I omit 'entity',  
since it is not clear that an experience must be felt by a  
particular being (it could be felt by a class of beings, an era of  
being, or an eternity of being). Third person truth is not anchored  
in the firmament of fact, it is simply a lowest common denominator  
of sensitivity among all participants.


I am OK with this, but as I defined entities from what I am realist  
about, I prefer to make it simple and refer to an arithmetic  
independent of us.


I agree that arithmetic is independent of us as human beings, but I  
see nothing to suggest that it is independent of all experience.



I can agree with this, if you include some God experience, for  
example. But I don't really need this.












If third person truth were sense independent, what would be the  
point of having sense actually experienced?


The presence of far away galaxies does not depend on us (human  
beings), but we still need sense (Hubble) to acknowledge their  
existence.


Of course, but far away galaxies do depend on the sensitivity of the  
matter of the Hubble, or other galaxies, or our eyeball and brain,  
to 'exist' in some particular form. Otherwise what is the difference  
between a galaxy existing and not existing?


For a physical object like a galaxy, you have many situations:

It exists in our branch of the multiverse, and is accessible to our  
measuring instruments.
It exists in our branch of the multiverse, but is not accessible to  
our measuring instruments (for some reason)


It exists in another term of the universal superposition (a  
physicalist would still call it physical)


It exists as a solution of a diophantine equation, but appears in no  
term of our multiverse (that is doubtful if our multiverse is really  
the state of the quantum void, but it can make sense logically).


It does not exist at all, because the galaxy would contains impossible  
objects,


etc.










How would it create sensation mechanically, and how would whatever  
is used to attach first person phenomena to third person phenomena  
be itself attached to either one?


Through two things: self-reference and truth.

Those are abstractions though, not mechanisms.You could say  
'tenacity' and 'ingenuity' too, but that doesn't put 'orange' in a  
digital sequence.


Self-referential mechanism exist tough.
Orange is in some digital sequence relative to some universal machine  
(Keep in mind that my answer assume computationalism).







the first in technically manageable, the second 

Re: Unexpected Hanging

2013-09-18 Thread Bruno Marchal


On 18 Sep 2013, at 11:43, Telmo Menezes wrote:

On Tue, Sep 17, 2013 at 7:11 PM, Bruno Marchal marc...@ulb.ac.be  
wrote:


On 17 Sep 2013, at 11:49, Telmo Menezes wrote:

On Mon, Sep 16, 2013 at 2:35 PM, Bruno Marchal marc...@ulb.ac.be  
wrote:



On 15 Sep 2013, at 10:37, Telmo Menezes wrote:


On Sun, Sep 15, 2013 at 9:54 AM, Bruno Marchal marc...@ulb.ac.be
wrote:




On 14 Sep 2013, at 04:25, Craig Weinberg wrote:



snip



With computationalism, it is more easy and clear. What exists, at  
the
ontological level, is what make true a sentence like ExP(x). So  
number
exists, once we assume arithmetic or combinators ..., because  
they make

true
Ex(x = x). And then (and only then), we can define different  
notions of
epistemological existence, and they will be as many notion of  
existence

as
we have modalities (notably those coming from incompleteness, as  
they are
unavoidable.  They will make true proposition with the shape []  
Ex []

P(x),
or [] Ex []  P(x), etc...



Ok, nice. I'm slowly getting used to modal logic. It's a weird thing
to learn because it seems to require removing things from your  
thought

process rather than adding them (at least for me). It's hard because
it's simple.




That's the idea of math and logic. It is abstraction. it  
simplifies, indeed.











So we will get notions of psychological
existence, physical existence, etc.



Ok, but what is the computational substrate?



*any* first order logical specification of *any* turing universal  
system

will do.

I suggest a very tiny part of arithmetic, but the S and K  
combinators will

do as well, or the Unitary group, etc.








There is still a
dissatisfaction in having to just accept it. I guess one can go back
to the idea of God, in a way.



God created 0, and its successors, and then said to them add, and  
multiply.


Ok. I'm agnostic, so I don't cringe at this sort of statement. I guess
I'm also an atheist, because I reject the idea of anthropomorphised
gods, but that's irrelevant here. My dissatisfaction with this is
empirical: god has been used so many times to cover up for our lack of
knowledge that, when confronted with current lack of knowledge and one
hears the word god one tends to become suspicious. On the other
hand, if there is something fundamental we provably can't know, I
guess it's fair enough to call that thing god. But I think we should
be extra-extra-careful before making that move.



I am agnostic too. But, like for consciousness, we can agree on some  
proposition about those notion, and reason from there.


As you know I use god in a very large sense, and then, with comp and  
the classical theory of knowledge, god or divine means mainly  
true, or related to true, with in mind the idea that truth is not  
something definable, although we can agree on many truth.







All the rest is what emerge from a universal matrix of cohering
Computations/dreams (1-computations, 3-computation) provably  
existing as a

consequence of the addition and multiplication laws.

If you can believe that 17 is prime, independently of you, then you  
can
understand, that, if you assume computationalism, arithmetic, as  
seen from
different internal self-referential view, contains such universal  
matrix,
or the universal dovetailing or any sigma_1 complete set of number,  
or a

Post creative set, a universal purpose computer, reflecting itself.

Arithmetic provides the block-mindscape. The existence and unicity  
of a
block multiverse emerging from it is basically unsolved, nor even  
yet made

enough precise.






It's just what is. But then this is an
ontological statement. Does this substrate exist? You can not use  
the

previous reasoning to support its existence, or can you?



I can't.  I only justify why machines develop such beliefs, even  
for good

(relatively correct for they local purpose in their probable history)
reason. Just that the physical reality is not the fundamental  
reality. The
physical reality is a complex self-referential sum made by a  
universal
machine/number, and selected or varied through first person  
(sometimes

plural) experiences.

There is no substrate (in that picture). Just dreams, or limit on
computations, probably related to (Turing) Universal group, braids,  
as the
empirical evidences suggest, but that is what we must recover from  
the
machine looking inside (in different ways corresponding to the  
intensional

variants, the arithmetical hypostases).









Even events seen in dreams get some
notion of existence, for example.



That's nice. I even have problems with statements like batman  
doesn't

exist.



Really?

I will send you a video!




Doesn't he, in some sense?



Certainly, in many sense. He has real cousins, like jetman:
http://www.youtube.com/watch?gl=BEv=x2sT9KoII_M


A batman with a french accent! Coincidence?


Europa is full of thinks. Dracula has also many cousins ...

Are there any coincidence?  Well, they are all relative too.



Re: What gives philosophers a bad name?

2013-09-18 Thread chris peck


--- Original Message ---

From: Bruno Marchal marc...@ulb.ac.be
Sent: 19 September 2013 12:08 AM
To: everything-list@googlegroups.com
Subject: Re: What gives philosophers a bad name?


On 18 Sep 2013, at 04:12, chris peck wrote:

 Hi John

  Exactly, Newton and Darwin and Einstein didn't need Popper to
 tell them how to get knowledge out of nature, and absolutely no
 change in how science was done happened in 1934, the year Popper's
 book was published. None whatsoever.

 Newton and Darwin would have had problems if they had of needed
 Popper given they worked before he was even born. Sometimes I read
 your posts and just think your belching wind.

 Popper was not trying to explain to people like Einstein how to 'get
 knowledge out of nature'. You're basing your entire argument on a
 straw man. In fact, he used Einstein as a paradigm example of how to
 conduct science properly. But what of Adler, Freud or Marx? All
 these people claimed their theories to be scientific too and earnt a
 whole lot of credit for that, but where they scientific? Their
 theories could be contrasted with Einstein's in so far as where
 Einstein derived 'bold and risky' observational predictions which
 could be falsified; neither Freud, Adler nor Marx did.

 You say that this demarcation principle has had no influence in
 science. Within Psychology however, for better or worse,
 Psychoanalysis is now perceived as a faintly absurd artifact of
 history. No one gets hot under the collar about penis envy anymore.
 Why? Because psychoanalysis doesn't make falsifiable predictions.
 There has been a cognitive and neuro-scientific 'revolution' which
 has striven hard to base psychology on more empirically falsifiable
 foundations.

 In physics there is a debate about whether string theory (or string
 theory if you must shake your rattle, John) deserves all the
 funding it receives. What is at the core of the debate?: Does it
 matter that it fails to make falsifiable predictions? Should other
 theories (quantum loop gravity) which potentially offer more scope
 for falsifiability receive a greater proportion of the available
 resources.

 Go back a hundred years or so and no-one gave a toss about any of
 that, so has Popper and the movement he spearheaded had an effect?
 Of course it has. Its pompous boneheaded bullshit to suggest
 otherwise.


If we agree, with Popper, that a theory needs to be falsifiable to be
interesting, then Popper's theory is interesting, because, strictly
speaking, it has been refuted, by John Case and Ngo-Manguelle:

CASE J.  NGO-MANGUELLE S., 1979, Refinements of inductive inference
by Popperian
machines. Tech. Rep., Dept. of Computer Science, State Univ. of New-
York, Buffalo.

By accepting that an inductive inference machine proposes, from time
to time, unfalsifiable theories, you enlarge non trivially the class
of phenomena that the machine can recognize, and build correct
theories about.

Note the (slight) paradox here.

Bruno





 Date: Tue, 17 Sep 2013 13:39:10 -0400
 Subject: Re: What gives philosophers a bad name?
 From: johnkcl...@gmail.com
 To: everything-list@googlegroups.com

 On Mon, Sep 16, 2013  Bruno Marchal marc...@ulb.ac.be wrote:

   So you are suggesting that a thing like broken glass is made of
 numbers

   I was just saying that things are not made up of things. A
 broken glass is NOT made of number. That has no meaning at all. What
 happens is that addition and multiplication of natural numbers
 emulate dreams, which might be dream of a broken glass.

 OK. How is that any different from saying broken glass is made of
 numbers?

  don't tell me there is no such thing as a thing, that's just more
 gibberish.

  It is a matter of tedious, and not so simple, exercise to see that
 the computations exist in some definite sense when we postulate
 arithmetic. (This is done in good textbook, and very well done in
 Epstein  Carnielli, but also in Boolos  Jeffrey). Physical things
 then appears as stable percept

 And concerning broken glass I said in my September 11 post It must
 have stable properties of some sort or I wouldn't be able to
 identify it as a thing.

  by persons living those dreams.

 OK. Therefore the physical universe and the physical things in it
 exist.

   Make up your mind! First you say everything is the process of
 natural numbers in relative computations and then you say
 digital machines, which are defined in term of number relations
 are an exception to this because what they do is not a process.
 The sum of number relations is not a process?? None of this makes
 any sense to me.

  Some number relation defines some machines, or some programs,
 which are static entities.
 *Other number relations, involving the preceding one, defines
 computations, or processes,

 Name a number relation that does not involve a computation or some
 other process!

  A machine, in that setting is basically one number, relative to
 some universal number.

 Relative? A relation needs at 

Re: What gives philosophers a bad name?

2013-09-18 Thread chris peck
Hi Bruno

We don't have to accept Popper's demarcation principle in order to understand 
that it has genuinely been influential or that Popper's arguments are used 
within scientific circles.

I haven't read the paper you mention but many people have taken 
falsificationism to task. Kuhn; Lakatos; Feyerabend to name just a few. Hilary 
Putnam's 'On the corroboration of Theories' is also I think a good refutation 
which argues that strictly speaking no hypotheses are falsifiable. But then the 
point is that they take Popper's ideas as a starting point from which to build 
more sophisticated descriptions of science.

I think Popper is often misconstrued though. I don't think he meant to argue 
that unfalsifiable theories had no place. His admiration for Darwinism and to a 
lesser extent Marxist Economics is informative here. He thought both to be 
valuable whilst also thinking both contained unfalsifiable elements. But it is 
a matter of degree. Theories that currently make falsifiable predictions are 
more interesting from an experimental perspective. All else being equal they 
have a greater claim for time in the lab and a greater claim on resources 
generally I would have thought...thus the current criticism of String Theory.

All the best



--- Original Message ---

From: Bruno Marchal marc...@ulb.ac.be
Sent: 19 September 2013 12:08 AM
To: everything-list@googlegroups.com
Subject: Re: What gives philosophers a bad name?


On 18 Sep 2013, at 04:12, chris peck wrote:

 Hi John

  Exactly, Newton and Darwin and Einstein didn't need Popper to
 tell them how to get knowledge out of nature, and absolutely no
 change in how science was done happened in 1934, the year Popper's
 book was published. None whatsoever.

 Newton and Darwin would have had problems if they had of needed
 Popper given they worked before he was even born. Sometimes I read
 your posts and just think your belching wind.

 Popper was not trying to explain to people like Einstein how to 'get
 knowledge out of nature'. You're basing your entire argument on a
 straw man. In fact, he used Einstein as a paradigm example of how to
 conduct science properly. But what of Adler, Freud or Marx? All
 these people claimed their theories to be scientific too and earnt a
 whole lot of credit for that, but where they scientific? Their
 theories could be contrasted with Einstein's in so far as where
 Einstein derived 'bold and risky' observational predictions which
 could be falsified; neither Freud, Adler nor Marx did.

 You say that this demarcation principle has had no influence in
 science. Within Psychology however, for better or worse,
 Psychoanalysis is now perceived as a faintly absurd artifact of
 history. No one gets hot under the collar about penis envy anymore.
 Why? Because psychoanalysis doesn't make falsifiable predictions.
 There has been a cognitive and neuro-scientific 'revolution' which
 has striven hard to base psychology on more empirically falsifiable
 foundations.

 In physics there is a debate about whether string theory (or string
 theory if you must shake your rattle, John) deserves all the
 funding it receives. What is at the core of the debate?: Does it
 matter that it fails to make falsifiable predictions? Should other
 theories (quantum loop gravity) which potentially offer more scope
 for falsifiability receive a greater proportion of the available
 resources.

 Go back a hundred years or so and no-one gave a toss about any of
 that, so has Popper and the movement he spearheaded had an effect?
 Of course it has. Its pompous boneheaded bullshit to suggest
 otherwise.


If we agree, with Popper, that a theory needs to be falsifiable to be
interesting, then Popper's theory is interesting, because, strictly
speaking, it has been refuted, by John Case and Ngo-Manguelle:

CASE J.  NGO-MANGUELLE S., 1979, Refinements of inductive inference
by Popperian
machines. Tech. Rep., Dept. of Computer Science, State Univ. of New-
York, Buffalo.

By accepting that an inductive inference machine proposes, from time
to time, unfalsifiable theories, you enlarge non trivially the class
of phenomena that the machine can recognize, and build correct
theories about.

Note the (slight) paradox here.

Bruno





 Date: Tue, 17 Sep 2013 13:39:10 -0400
 Subject: Re: What gives philosophers a bad name?
 From: johnkcl...@gmail.com
 To: everything-list@googlegroups.com

 On Mon, Sep 16, 2013  Bruno Marchal marc...@ulb.ac.be wrote:

   So you are suggesting that a thing like broken glass is made of
 numbers

   I was just saying that things are not made up of things. A
 broken glass is NOT made of number. That has no meaning at all. What
 happens is that addition and multiplication of natural numbers
 emulate dreams, which might be dream of a broken glass.

 OK. How is that any different from saying broken glass is made of
 numbers?

  don't tell me there is no such thing as a thing, that's just more
 gibberish.

  It is a matter of tedious, and not so 

Re: What gives philosophers a bad name?

2013-09-18 Thread John Clark
On Tue, Sep 17, 2013 at 10:12 PM, chris peck chris_peck...@hotmail.comwrote:


  You say that this demarcation principle has had no influence in science.
 Within Psychology however, for better or worse, Psychoanalysis is now
 perceived as a faintly absurd artifact of history. No one gets hot under
 the collar about penis envy anymore. Why? Because psychoanalysis doesn't
 make falsifiable predictions. There has been a cognitive and
 neuro-scientific 'revolution' which has striven hard to base psychology on
 more empirically falsifiable foundation


It doesn't take a genius to realize that if a idea isn't getting anywhere,
that is to say if it doesn't produce new interesting ideas, your time would
be better spent doing something else.  Are you trying to tell me with a
straight face that without Popper people in 2013 wouldn't have been able to
figure out that the study of penis envy wasn't a good use of your time?

 In physics there is a debate about whether string theory (or string
 theory if you must shake your rattle, John) deserves all the funding it
 receives. What is at the core of the debate?: Does it matter that it fails
 to make falsifiable predictions?


Obviously it matters! Although most physicists have not read Popper and may
not even have heard of him, all of them agree that it matters that string
theory has not made any testable predictions, but everybody also agrees
that it is a work in progress; after all, Einstein's theory of gravitation
didn't make testable predictions either when it was only half finished and
he was still struggling with it. The big question is whether string theory
will ever be able to make testable predictions, and Popper is of absolutely
no help whatsoever in answering that question. None zero zilch goose egg.

 Should other theories (quantum loop gravity) which potentially offer more
 scope for falsifiability receive a greater proportion of the available
 resources.


So far quantum loop gravity is no better at making testable predictions
than string theory is. Which theory will history say was more productive?
Perhaps strings will lead to something, perhaps loops will, perhaps both
will, perhaps neither will. I don't know, you don't know, and Popper most
certainly does not know.


  Go back a hundred years or so and no-one gave a toss about any of that


Bullshit. There was both good science and pseudoscience a hundred years ago
and there is both good science and pseudoscience today. Popper changed
nothing.

  John K Clark

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Re: What gives philosophers a bad name?

2013-09-18 Thread John Clark
On Wed, Sep 18, 2013  Bruno Marchal marc...@ulb.ac.be wrote:

 Name a number relation that does not involve a computation or some other
 process!


 It is difference between a number j used as a name for a program, like in
 the arithmetical relation phi_j(k) = r,


A arithmetical relation is a process.

 and a number coding a computation


A computation is a process.

  John K Clark

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Re: Unexpected Hanging

2013-09-18 Thread Liz R
If someone told me that I was going to be hung, I can assure you I would be 
expecting it every day. I wouldn't bother with any logical analysis.

(The unexpected exam, on the other hand...)


On Thursday, 12 September 2013 21:33:24 UTC+12, telmo_menezes wrote:

 Time for some philosophy then :) 

 Here's a paradox that's making me lose sleep: 
 http://en.wikipedia.org/wiki/Unexpected_hanging_paradox 

 Probably many of you already know about it. 

 What mostly bothers me is the epistemological crisis that this 
 introduces. I cannot find a problem with the reasoning, but it's 
 clearly false. So I know that I don't know why this reasoning is 
 false. Now, how can I know if there are other types of reasoning that 
 I don't even know that I don't know that they are correct? 

 Cheers, 
 Telmo. 


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Re: Unexpected Hanging

2013-09-18 Thread meekerdb

On 9/18/2013 5:21 AM, Bruno Marchal wrote:

I naturally took an extreme example to make my point.


I do that often too, but here it weakened your point. Everyone (except Sunday 
philosopher) agree on 0, and its successor.


Also some serious mathematicians are finitists.

The Meaning of Pure Mathematics
Author(s): Jan MycielskiSource: Journal of Philosophical Logic, Vol. 18, No. 3 (Aug., 
1989), pp. 315-320Published by: SpringerStable URL: http://www.jstor.org/stable/30227216 .



Locally Finite Theories
Author(s): Jan MycielskiSource: The Journal of Symbolic Logic, Vol. 51, No. 1 (Mar., 
1986), pp. 59-62Published by: Association for Symbolic LogicStable URL: 
http://www.jstor.org/stable/2273942 .


Brent

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Re: Unexpected Hanging

2013-09-18 Thread Telmo Menezes
On Wed, Sep 18, 2013 at 6:13 PM, Bruno Marchal marc...@ulb.ac.be wrote:

 On 18 Sep 2013, at 11:43, Telmo Menezes wrote:

 On Tue, Sep 17, 2013 at 7:11 PM, Bruno Marchal marc...@ulb.ac.be wrote:


 On 17 Sep 2013, at 11:49, Telmo Menezes wrote:

 On Mon, Sep 16, 2013 at 2:35 PM, Bruno Marchal marc...@ulb.ac.be
 wrote:



 On 15 Sep 2013, at 10:37, Telmo Menezes wrote:

 On Sun, Sep 15, 2013 at 9:54 AM, Bruno Marchal marc...@ulb.ac.be
 wrote:




 On 14 Sep 2013, at 04:25, Craig Weinberg wrote:



 snip



 With computationalism, it is more easy and clear. What exists, at the
 ontological level, is what make true a sentence like ExP(x). So
 number
 exists, once we assume arithmetic or combinators ..., because they make
 true
 Ex(x = x). And then (and only then), we can define different notions of
 epistemological existence, and they will be as many notion of existence
 as
 we have modalities (notably those coming from incompleteness, as they
 are
 unavoidable.  They will make true proposition with the shape [] Ex []
 P(x),
 or [] Ex []  P(x), etc...



 Ok, nice. I'm slowly getting used to modal logic. It's a weird thing
 to learn because it seems to require removing things from your thought
 process rather than adding them (at least for me). It's hard because
 it's simple.




 That's the idea of math and logic. It is abstraction. it simplifies,
 indeed.








 So we will get notions of psychological
 existence, physical existence, etc.



 Ok, but what is the computational substrate?



 *any* first order logical specification of *any* turing universal system
 will do.

 I suggest a very tiny part of arithmetic, but the S and K combinators
 will
 do as well, or the Unitary group, etc.







 There is still a
 dissatisfaction in having to just accept it. I guess one can go back
 to the idea of God, in a way.



 God created 0, and its successors, and then said to them add, and
 multiply.


 Ok. I'm agnostic, so I don't cringe at this sort of statement. I guess
 I'm also an atheist, because I reject the idea of anthropomorphised
 gods, but that's irrelevant here. My dissatisfaction with this is
 empirical: god has been used so many times to cover up for our lack of
 knowledge that, when confronted with current lack of knowledge and one
 hears the word god one tends to become suspicious. On the other
 hand, if there is something fundamental we provably can't know, I
 guess it's fair enough to call that thing god. But I think we should
 be extra-extra-careful before making that move.



 I am agnostic too. But, like for consciousness, we can agree on some
 proposition about those notion, and reason from there.

 As you know I use god in a very large sense, and then, with comp and the
 classical theory of knowledge, god or divine means mainly true, or
 related to true, with in mind the idea that truth is not something
 definable, although we can agree on many truth.





 All the rest is what emerge from a universal matrix of cohering
 Computations/dreams (1-computations, 3-computation) provably existing as
 a
 consequence of the addition and multiplication laws.

 If you can believe that 17 is prime, independently of you, then you can
 understand, that, if you assume computationalism, arithmetic, as seen
 from
 different internal self-referential view, contains such universal
 matrix,
 or the universal dovetailing or any sigma_1 complete set of number, or a
 Post creative set, a universal purpose computer, reflecting itself.

 Arithmetic provides the block-mindscape. The existence and unicity of a
 block multiverse emerging from it is basically unsolved, nor even yet
 made
 enough precise.





 It's just what is. But then this is an
 ontological statement. Does this substrate exist? You can not use the
 previous reasoning to support its existence, or can you?



 I can't.  I only justify why machines develop such beliefs, even for
 good
 (relatively correct for they local purpose in their probable history)
 reason. Just that the physical reality is not the fundamental reality.
 The
 physical reality is a complex self-referential sum made by a universal
 machine/number, and selected or varied through first person (sometimes
 plural) experiences.

 There is no substrate (in that picture). Just dreams, or limit on
 computations, probably related to (Turing) Universal group, braids, as
 the
 empirical evidences suggest, but that is what we must recover from the
 machine looking inside (in different ways corresponding to the
 intensional
 variants, the arithmetical hypostases).







 Even events seen in dreams get some
 notion of existence, for example.



 That's nice. I even have problems with statements like batman doesn't
 exist.



 Really?

 I will send you a video!



 Doesn't he, in some sense?



 Certainly, in many sense. He has real cousins, like jetman:
 http://www.youtube.com/watch?gl=BEv=x2sT9KoII_M


 A batman with a french accent! Coincidence?


 Europa is full of thinks. Dracula has also 

Re: What gives philosophers a bad name?

2013-09-18 Thread meekerdb

On 9/18/2013 10:24 AM, John Clark wrote:


 Should other theories (quantum loop gravity) which potentially offer more 
scope
for falsifiability receive a greater proportion of the available resources.


So far quantum loop gravity is no better at making testable predictions than string 
theory is.


Actually I think LQG predicts that there should be some dispersion for very energetic 
photons.  A prediction that seems to have be falsified by the simultaneous arrival of 
different energy gamma rays from very distant supernova.  The result indicates spacetime 
is smooth down to 0.002 of the Planck length.



http://arxiv.org/abs/1109.5191v2

Brent

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Re: How PIP solves the hard problem of consciousness

2013-09-18 Thread Craig Weinberg


On Wednesday, September 18, 2013 8:26:35 AM UTC-4, Bruno Marchal wrote:


 On 17 Sep 2013, at 19:17, Craig Weinberg wrote:



 On Tuesday, September 17, 2013 12:40:27 PM UTC-4, freqflyer07281972 wrote:

 Thanks Craig, you've articulated quite well a number of difficulties in 
 approaching the hard problem, IMHO. I was reading this article in the SEP 
 and thought of your approach:
 http://plato.stanford.edu/entries/nishida-kitaro/


 Thanks, cool
  


 Look especially under his glossing of the idea of 'pure experience.' It 
 reminds me of your MR/PIP and seems quite congenial to it. 

 Whaddaya think? 


 Yes, I agree his 'pure experience' matches my 'sense' in a lot of the 
 important ways. I use the opposite assumption about it being 'MU' or 
 'nothing'. It is tempting to conceive of the limitation of our local 
 experience and propose 'nothing' beyond it, but I think that it works much 
 better when we invert it and suppose that beyond local experience is 
 'everythingness' and 'eternity'.

 I particularly recognize Pure experience launches the dynamic process of 
 reality that differentiates into subjective and objective phenomena on 
 their way to a higher unity, and the recapture of our unitary foundation is 
 what Nishida means by the Good.

 This is the same as my model, although I would say that the 
 differentiation first diverges from pure experience to subjective qualia, 
 where objective qualia emerge from the public intersubjectivity (quanta). 
 His concept of higher unity is Good while mine would see good as only a 
 particular measure of subjective 'likeness' and the actual higher unity I 
 see as Significance...the reconciliation of diffracted sense as it is 
 separated from the entropy of scaled distance and time.

 Thanks,
 Craig


 On Monday, September 16, 2013 1:35:27 PM UTC-4, Craig Weinberg wrote:

 The Hard Problem of consciousness asks why there is a gap between our 
 explanation of matter, or biology, or neurology, and our experience in the 
 first place. What is it there which even suggests to us that there should 
 be a gap, and why should there be a such thing as experience to stand apart 
 from the functions of that which we can explain.

 *Materialism only miniaturizes the gap* and relies on a machina ex deus 
 (intentionally reversed deus ex machina) of ‘complexity’ to save the day. 
 An interesting question would be, why does dualism seem to be easier to 
 overlook when we are imagining the body of a neuron, or a collection of 
 molecules? I submit that it is because miniaturization and complexity 
 challenge the limitations of our cognitive ability, we find it easy to 
 conflate that sort of quantitative incomprehensibility with the other 
 incomprehensibility being considered, namely aesthetic* awareness. What 
 consciousness does with phenomena which pertain to a distantly scaled 
 perceptual frame is to under-signify it. It becomes less important, less 
 real, less worthy of attention.

 *Idealism only fictionalizes the gap*. I argue that idealism makes more 
 sense on its face than materialism for addressing the Hard Problem, since 
 material would have no plausible excuse for becoming aware or being 
 entitled to access an unacknowledged a priori possibility of awareness. 
 Idealism however, fails at commanding the respect of a sophisticated 
 perspective since it relies on naive denial of objectivity. Why so many 
 molecules? Why so many terrible and tragic experiences? Why so much 
 enduring of suffering and injustice? The thought of an afterlife is too 
 seductive of a way to wish this all away. The concept of maya, that the 
 world is a veil of illusion is too facile to satisfy our scientific 
 curiosity.

 *Dualism multiplies the gap*. Acknowledging the gap is a good first 
 step, but without a bridge, the gap is diagonalized and stuck in infinite 
 regress. In order for experience to connect in some way with physics, some 
 kind of homunculus is invoked, some third force or function interceding on 
 behalf of the two incommensurable substances. The third force requires a 
 fourth and fifth force on either side, and so forth, as in a Zeno paradox. 
 Each homunculus has its own Explanatory Gap.

 *Dual Aspect Monism retreats from the gap*. The concept of material and 
 experience being two aspects of a continuous whole is the best one so far – 
 getting very close. The only problem is that it does not explain what this 
 monism is, or where the aspects come from. It rightfully honors the 
 importance of opposites and duality, but it does not question what they 
 actually are. Laws? Information?

 *Panpsychism toys with the gap*.Depending on what kind of panpsychism 
 is employed, it can miniaturize, multiply, or retreat from the gap. At 
 least it is committing to closing the gap in a way which does not take 
 human exceptionalism for granted, but it still does not attempt to 
 integrate qualia itself with quanta in a detailed way. Tononi’s IIT might 
 be an 

Re: Unexpected Hanging

2013-09-18 Thread Craig Weinberg


On Wednesday, September 18, 2013 9:14:21 AM UTC-4, Bruno Marchal wrote:


 On 17 Sep 2013, at 19:46, Craig Weinberg wrote:



 On Tuesday, September 17, 2013 6:07:23 AM UTC-4, telmo_menezes wrote:

 On Mon, Sep 16, 2013 at 7:47 PM, Craig Weinberg whats...@gmail.com 
 wrote: 
  
  
  On Saturday, September 14, 2013 5:53:01 AM UTC-4, telmo_menezes wrote: 
  
  On Fri, Sep 13, 2013 at 12:06 PM, Craig Weinberg whats...@gmail.com 
  wrote: 
   
   
   On Friday, September 13, 2013 5:31:40 AM UTC-4, telmo_menezes wrote: 
   
   On Thu, Sep 12, 2013 at 5:47 PM, Craig Weinberg whats...@gmail.com 

   wrote: 
Which reasoning is clearly false? 

Here's what I'm thinking: 

1) The conclusion I won't be surprised to be hanged Friday if I 
 am 
not 
hanged by Thursday creates another proposition to be surprised 
about. 
By 
leaving the condition of 'surprise' open ended, it could include 
being 
surprised that the judge lied, or any number of other soft 
contingencies 
that could render an 'unexpected' outcome. 
   
   Ok but that's not the setup. The judge did not lie and there are no 
   soft contingencies. The surprise is purely from not having been 
 sure 
   the day of the execution was the one when somebody knocked at the 
 door 
   at noon. Even if you allow for some soft contingencies, I believe 
 the 
   paradox still holds. 
   
   
   I don't understand why it's a paradox and not just contradiction. If 
 I 
   say 
   'you're going to die this week and it's going to be a surprise 
 when', 
   that 
   is already a contradiction. 
  
  Ok, after a good amount of thought, I have come to agree with this. 
  The judge lied. You convinced me! :) 
  
  
  Ah cool! Thanks for posting the problem also, it helped me resurrect 
 some 
  lost mathematical-logical ability. 
  
  
  (with due credit to Alberto and 
  Brent, who also helped convince me). A more honest statement would be 
  you're going to die this week and it will probably be a surprise 
  when, or, you'll probably die this week and it will be a surprise if 
  you do. 
  
  My thought process involves reducing the thing to a game. There are 5 
  turns in the game, and the attacker has to choose one of those turns 
  to press a button. The defender also has a button, and its goal is to 
  predict the action of the attacker. If both press the button. the 
  defender wins. If only the attacker pressers the button, the attacker 
  wins. Otherwise the game continues. The system is automated so that 
  the attacker button is automatically pressed. Now the attacker (judge) 
  is making the claim that he can always win this game. He cannot, there 
  is no conceivable algorithm that guarantees this. Playing multiple 
  instances of the game, I would guess the optimal strategy for the 
  attacker is to chose a random turn, including the last. This will 
  offer 20% of the games to the defender, but there's nothing better one 
  can do. 
  
  I read your post and now I think I understand you positions better. 
  
  
  Nice. 
  
  
  I 
  am not convinced, but I will grant you that they are not easily 
  attackable. On the other hand, this could be because they are 
  equivalent to Carl Sagan's invisible dragon in the garage or, as 
  Popper would put it, unfalsifiable. Do you care about falsifiability? 
  
  
  Falsifiability is nice - especially in public-facing physics, but since 
  falsification itself is a sensory experience, we should not insist on 
 the 
  same kind of falsifiability for private physics that we have in public 
  physics. 

 Alright. Personal or 1p experiences are probably outside the realm of 
 phenomena that can be investigated under Popperian science. I think 
 this is something that many of us can agree with, independently of 
 accepting/rejecting comp, for example. I think this is also what 
 characterises hard-core positivists: they either find 1p reality 
 irrelevant or even reject its existence. 


 Which makes sense, since from that kind of fundamentalist 3p perspective, 
 we can only take consciousness for granted. From there, we can either admit 
 or deny that we are taking it for granted, and if we admit it, then we 
 would want to minimize the significance of that.

  
  If so, can you conceive of some experiment to test what you're 
  proposing? 
  
  
  There may not be a test, so much as accumulating a body of 
 understanding by 
  correlating uses of information and qualities of sensation. It's more 
 at the 
  hypothesis stage than the testing stage. 
  
  
  
  The symbol grounding problem haunted me before I had a name for it. 
  It's a very intuitive problem indeed. I tend to believe that the 
  answer will actually look something like an Escher painting. Assuming 
  that neuroscience is enough, one can imagine the coevolution of neural 
  firing patterns with environmental conditions. This can lead to neural 
  firing patterns that correlate with higher