RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-08-01 Thread John M
To the quote of Lee's remark:
I would try Vernumft (which may as well be similarly
inaccurate for 'consciousness'). There were some
German speaking souls(!) who used it quite effectively
G.

I try for'mind':the mentality aspect of the living
complexity   which says not much more if 'mentality'
is not properly identified. However referring to the
complexity of the 'living creatures' it points to a
function which is inseparable from the substrate it
goes together with (brain and the rest of the world). 
So I would not agree with Baum as to the 'brain'
running the program for thinking, which is a tool in
the complexity 'running' in concert with the rest of
it. Also simulating menatlity from computer
expressions seems reversing the fact that in comp (AI
etc.) the computer science attempts to simulate
certain and very limited items we already discovered
from our mind. 
Living I use instead of human, of course. But that
comes from my generalization trend of terms beyond our
human only pretension. 

To Searle's book-title: it implies that we already
HAVE discovered what the 'mind' is. Well, we did not.
At least not to the satisfaction of the advanced
thinking community.

John M

--- [EMAIL PROTECTED] [EMAIL PROTECTED]
wrote:

 [Lee wrote:]
 Interesting note about mind: there is no German
 language
 equivalent for it. Another reason to be *very*
 careful when
 employing it. Sarcastic comment about the
 possibility of
 Teutonic zombies elided.  
 
 In a very deep (but non-mathematical) book, What
 is Thought?
 by Eric Baum, the author decides to use mind as
 the name of
 the program the brain runs, and it seems to work
 out well.
 
 Lee
 
 What is going on? Another book is quoted and it too
 is right in front of me. I conclude there is a
 hidden web cam somewhere in my office I love
 causality. :)
 
 As regards the book contents. I have to go through
 it in moiré detail but at first run through he makes
 precisely the same mistakes as all the other
 functionalists outlined so well in 
 
 Searle J. R. 1992. The rediscovery of the mind.
 Cambridge, Mass.: MIT Press. xv, 270 p.
 
 Once again: A metaphor based on a lack of
 imagination. The fallacy: that because our mind is
 so adept at constructing ontologies that therefore
 there is such things as 'things' in the universe.
 There are ways of constructing 'thought' that have
 no need for prescription of an ontology of any sort
 yet appears to be so. Including Germans! 
 
 Baum cannot make any empirical predictions of brain
 matter. Nice read...but no progress has been made
 except to shoehorn the received view into the
 limelight.
 
 Are we ever going to get past this?
 
 Cheers
 
 Colin
 
 



RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-08-01 Thread Lee Corbin
Aditya writes

 [LC]:
  Well, Russell did also say that OMs and events seemed to him about as
  alike as chalk and cheese. It's starting to look that way:

  So, alas, it seems that the firmly established meanings of
  event and observer moment can't really be said to be at
  all the same thing. (Folks like Russell and Hal have been
  using the term OM for years and years, and event has
  a pretty standard meaning in physics.) Observer moments have
  to do with something conscious (and, evidently, pretty complex).
  And of course, as Hal wrote later on, consciousness exists on
  a gray scale.

 Then dare I say that any Theory based on this restricted definition
 of OMs (happening to observers with consciousness/intelligence
 comparable to ours) can never be as complete as a theory based on
 the much simpler (and encompassing) notion of events.

I am hugely sympathetic to the point of view you are proposing, namely that 
theories based on OMs do have inherent weaknesses, and
are quite out of line with the progress sciences has shown historically.

Most of the proponents of OM-based theories will succumb to the temptation to 
resort to introspection as an investigation tool. Yes,
some will at all times keep flexibly in mind the realization that any OM 
explanation must be totally consistent with its dual
event-based explanation.

However, it's the eternal search for ever simpler more unifying explanation 
that fuels the search for a way to avoid another dualism
(so it seems to me), the idea that mathematics and physics are separate. That 
is, they want to derive everything about physics from
the platonic existence of mathematical patterns.

 Ok, the above sounds a bit arrogant on my part, but its just that when
 I think of Big things like ToEs, I am much more comfortable without
 the burden of assuming that I am special in some way. If it were so,
 It would either be too much of a coincidence, or some act of a God
 that I can never hope to explain to myself.

Yes, some of Wheeler's theories (e.g. an observer created universe) have this 
very characteristic: the observer (to me an immensely
complicated machine, a johnny-come-lately in evolution) is placed at the center 
and deemed fundamental. But to be fair, the
time-deniers (the math Platonists who seek everything explained by patterns) 
allow that all conscious, complex entities have
non-trivial OMs.

 I can only agree to disagree by saying that any theory that explains
 consciousness in terms of something more than just interference of
 events on a HUGE scale, is pretty much the same as explaining away
 [coincidence] as acts of a God: that unreachable, unfathomable entity.

Yeah, well said.

Lee



RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-08-01 Thread John M

--- Lee Corbin [EMAIL PROTECTED] wrote:

 Russell writes
 
  John M. wrote
 
   To Russell's 4 coordinates of (any?) event: how
 come
   the occurrence (event!) of a 'good idea' in my
 mind -
   (mind: not a thing, not a place, not
 time-restricted)
   should have t,x,y,z coordinates?
  
[Russell?]
  I would say that the event occurs in your brain
 (the neural correlate
  of whatever is going on in your mind).  Whatever
 is going on in your
  mind is something else - an observation perhaps.
 
[JM]:
I guess whatever is observable in your brainfunctions
is not the event but its reflection. The event itself
is the 'occurrence' what you deem 'observation', while
you observe it only as it happenned. 
It is quite clear as you call the  brain a neural
correlate, which makes it clear that it is not the
originating, neither executing factor, just a
correlate of such. Exactly the 'hard problem' since
Kohler's Gestalt. 
I like the correlate, it is pointing to the
inseparability of the functions as we try to decipher
them. 

To the translations in Russell's other post: I take
translation = transfiguration, I read in 5 languages
and saw 'good' translations with different meanings.
Nothing beats the 'original' written in a
mother-tongue 

John M



Re: Clarification of Terms (was RE: What We Can Know About the World)

2005-08-01 Thread Bruno Marchal

Hi John,

Le 01-août-05, à 16:57, John M a écrit :


Also simulating menatlity from computer
expressions seems reversing the fact that in comp (AI
etc.) the computer science attempts to simulate
certain and very limited items we already discovered
from our mind.


Except that since Turing, Church, Godel ... we know that we don't know 
what is a computer. There are no theory capable of completely 
describing what they can or cannot do.
Remember I insist that comp entails we cannot even know which machine 
we are, although we can bet on some substitution level in front of the 
doctor (for the worst or for the best).

The discovery of computers makes us much more ignorant.
Computers will make our lives much less easy. Hopefully more funny too 
but it depends in part from us (the human, here).


Kind Regards,

Bruno

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




RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-08-01 Thread [EMAIL PROTECTED]
John M: 
snip:)  
To Searle's book-title: it implies that we already
HAVE discovered what the 'mind' is. Well, we did not.
At least not to the satisfaction of the advanced
thinking community.

John M


I think the name was a play the name of another book
The discovery of the mind by Bruno Snell

Searle's too smart to allude to literality like that.
Indeed the whole book is about our lack of success in the quest.

Vernumft ly yours
:-)
Colin



Re: What We Can Know About the World

2005-07-31 Thread Aditya Varun Chadha
[RS]
On 7/31/05, Russell Standish [EMAIL PROTECTED] wrote:
 On Sat, Jul 30, 2005 at 12:25:48PM -0700, Lee Corbin wrote:
 
  This is not to say that progress is impossible. Consider an idea
  like Aditya has:  what is the real difference between an event
  and an observer-moment?  In trying to answer that question, many
  of us may learn something (at least for our own purposes).
 
 
 Err, an event is a particular set of coordinates (t,x,y,z) in 4D
 spacetime. This is how it is used in GR, anyway.
 
 An observer moment is a set of constraints, or equivalently
 information known about the world (obviously at a moment of time). It
 corresponds the the state vector \psi of quantum mechanics.
 
 Perhaps you have different definitions of these terms, but it seems
 like chalk and cheese to me.
 

Lets not constrain an event to mean something only in 4-space. Take
any N-Space and you can define it in terms of a set of N-dim. events.
Ofcourse I agree with your definition, am just making it scale over
dimensions.

Now consider an observer moment to be exactly what you are defining
it to be: information KNOWN about the world at a moment of time. The
coming to know of any information corresponds to an event. Thus an
observer moment is well-defined if and only if event is defined.
In other words, an Observer-Moment exists iff it's corresponding
coming to know event exists for some observer. In terms of light
cones, OMs are the Events at and after the crossing over of light
cones.

I think the distinction is not a qualitative one between the two, only
those events which interfere with the set of events observable by
us (who are also just sets of events) correspond to
observer-moments in our universe. So the set of OMs is simply a
subset of the set of all events.

refer to my previous mail about the multiverse as a partition with
equivalence classes which are maximal sets of connected observer
moments, in other words, maximal sets of mutually interfering
events. visualize this as connected components of a graph.

Defining entities in more than one different sets of words does not
rule out their qualitative identity. Every Observer-Moment is an
event. Every event is an Observer-Moment in some universe.

-- 
Aditya Varun Chadha
adichad AT gmail.com
http://www.adichad.com



RE: What We Can Know About the World

2005-07-31 Thread Hal Finney
Jesse Mazer writes:
 as I said, my idea is 
 that *all* possible causal patterns qualify as observer-moments, not just 
 complex ones like ours. And I don't disagree that complex observer-moments 
 are generally the result of a long process of evolution in the physical 
 universe, it's just that I think at a most fundamental level the physical 
 universe would be reducible to an enormous pattern of causal relationships 
 which can be broken down into the relationships between a lot of 
 sub-patterns, each of which is an observer-moment. The idea that physics 
 should ultimately be explainable in terms of nothing more than causal 
 relationships between events, and that higher-order concepts like 
 particles and spacetime would emerge from this level of explanation, is 
 an idea that some approaches to quantum gravity seem to favor, like loop 
 quantum gravity--it's at least not out of the question that a final 
 physical ToE would be about nothing more than causal relationships between 
 events. If so, it would just be a different interpretation of this theory 
 to say that each sub-network in this universal causal network would be an 
 observer-moment of some kind, and my meta-physical speculation would be 
 that you could *start* by looking at all possible finite causal networks and 
 finding a unique measure on them, and the appearance of the huge causal 
 network we call the physical universe could be derived from the 
 relationships between all the sub-patterns implied by this unique measure. 

This is a very interesting speculation which raises some random questions
and comments:

1. One problem I have is with the notion of causality.  Do you view this as
something that is well defined, the degree and/or kind of causality that
one node in a causal network applies to another?  Would it be merely a
boolean (node A either does or does not have a causal influence on node
B) or would it be more complex (node A promotes B while inhibiting C)?
I realize that these are detailed questions to be asked of an embryonic
theory but it would help to understand what your notion of causality is.

One of my concerns is that some universes may not have causality as well
defined as ours does, and I wonder how well your theory would work there.
In fact, even in our universe one can certainly imagine situations and
relationships between events where the existence or degree of causality
is not at all well defined.  I'm worried about basing a model for
consciousness on something as abstract and ill defined as causality.
Are we replacing one mystery with another?

2. If we think of the causal pattern which corresponds to a conventional
observer-moment, say your experience of eating a particular bite of cherry
pie, would you imagine that this is something which could in principle
be diagrammed, and/or represented in some kind of canonical form?
So we could point to this picture and say, this *is* that particular
experience of eating that byte of cherry pie.  That would be pretty
cool, and I do think that ultimately any theory of consciousness is
going to have to be able to do something like this.

3. Presumably the actual causal patterns of our conscious moments are
very large.  We have trillions of neurons each with tens of thousands
of synapses, firing at hundreds or thousands of times per second.
That's a lot of activity, all of it intricately linked into what might
well be called a causal network, although the causality involved is
quite complex and involves integration over time.  But assuming that we
could in fact imagine representing that in canonical form, clearly the
representation would be very large.

We could imagine successively simpler causal patterns until we got
down to quite trivial ones.  Calling them observer moments seems to
be a bit of a stretch, given the enormous number of orders of magnitude
difference between what we would normally recognize as a conscious OM and
one of these trivial ones.  But on the other hand I agree that we could
probably not draw a line in this succession of causal patterns and say
this half are conscious, this half are unconscious.  Presumably we are
talking about shades of gray here, degrees of consciousness.  It never
completely goes away, although it certainly gets close enough to zero
for all practical purposes.

4. Another point is that for a causal pattern to actually be
recognizably conscious requires more than complexity.  One can imagine
any number of causal networks of perhaps tremendous complexity that would
not seem particularly likely to correspond to what we would recognize
as conscious experience.  (In terms of the shades of gray analogy,
even though the networks are at least slightly conscious by definition,
there would still be virtually no gray there.)

5. To me, this points to the problem with panpsychism theories like this.
On the one hand, everything is conscious (at least a little bit).
This saves us from the Sorites paradox, that it's impossible to draw a

Re: What We Can Know About the World

2005-07-31 Thread Stephen Paul King

Hi Russel,

   A possibly related question. Given your definition of events and OMs, 
does it not seem that they complement each other, assuming that events have 
more quatities associated, such as 4-momentum-energy?


Onward!

Stephen

- Original Message - 
From: Russell Standish [EMAIL PROTECTED]

To: Lee Corbin [EMAIL PROTECTED]
Cc: everything-list@eskimo.com
Sent: Sunday, July 31, 2005 12:40 AM
Subject: Re: What We Can Know About the World

On Sat, Jul 30, 2005 at 12:25:48PM -0700, Lee Corbin wrote:


This is not to say that progress is impossible. Consider an idea
like Aditya has:  what is the real difference between an event
and an observer-moment?  In trying to answer that question, many
of us may learn something (at least for our own purposes).



Err, an event is a particular set of coordinates (t,x,y,z) in 4D
spacetime. This is how it is used in GR, anyway.

An observer moment is a set of constraints, or equivalently
information known about the world (obviously at a moment of time). It
corresponds the the state vector \psi of quantum mechanics.

Perhaps you have different definitions of these terms, but it seems
like chalk and cheese to me.

Cheers

--
*PS: A number of people ask me about the attachment to my email, which
is of type application/pgp-signature. Don't worry, it is not a
virus. It is an electronic signature, that may be used to verify this
email came from me if you have PGP or GPG installed. Otherwise, you
may safely ignore this attachment.


A/Prof Russell Standish  Phone 8308 3119 (mobile)
Mathematics 0425 253119 ()
UNSW SYDNEY 2052   [EMAIL PROTECTED]
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   International prefix  +612, Interstate prefix 02




Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread Lee Corbin
Russell submits the following as clarifications:

 An event is a particular set of coordinates (t,x,y,z) in 4D
 spacetime. This is how it is used in GR, anyway.
 
 An observer moment is a set of constraints, or equivalently
 information known about the world (obviously at a moment of time).
 It [the observer moment] corresponds the the state vector \psi
 of quantum mechanics.

and Stephen inquires

 Hi Russell,
 A possibly related question. Given your definition of events and OMs, 
 does it not seem that they complement each other, assuming that events have 
 more quatities associated, such as 4-momentum-energy?

Well, Russell did also say that OMs and events seemed to him about as
alike as chalk and cheese. It's starting to look that way:

I quote Hal:

 Calling them [causal patterns] observer moments seems
 to be a bit of a stretch, given the enormous number of
 orders of magnitude difference between what we would
 normally recognize as a conscious OM and one of these
 trivial ones [e.g. a 302-neuron nematode OM].

So, alas, it seems that the firmly established meanings of
event and observer moment can't really be said to be at
all the same thing. (Folks like Russell and Hal have been
using the term OM for years and years, and event has 
a pretty standard meaning in physics.) Observer moments have
to do with something conscious (and, evidently, pretty complex).
And of course, as Hal wrote later on, consciousness exists on
a gray scale.

Lee

P.S. In normal physics an event, as Russell says, is associated
with coordinates. Nonetheless I, for one, had always supposed
that indeed something was happening there, e.g., a photon was
emitted. Well, in familiar physics we may also say that in the
usual three-space there is quantum activity at each point. This,
at least for me, makes the terms a little more meaningful.



RE: What We Can Know About the World

2005-07-31 Thread Lee Corbin
Brent writes

 [Lee writes]
  [Jesse wrote]
   Sure, but all of this is compatible with an idealist philosophy where
   reality is made up of nothing but observer-moments at the most
   fundamental level--something like the naturalistic panpsychism
   discussed on that webpage I mentioned.
  
  The disagreement I have with what you have written 
  is that I do *not* see observer-moments as the most
  fundamental entities. 
 
 There are two distinct kinds of fundamental.  OMs may be epistemologically
 fundamental, but not ontologically fundamental.

We'll see about that!  :-)

 Starting with what we think we know, we develop a model
 of reality which goes beyond what we directly experience.
 It's the best explanation of our experience that
 there is a reality not dependent on our thoughts.

I can't argue with that.  Yes, indeed, whether individually
as we develop from childhood, or historically, as we develop
away from primitive concepts, (but NOT philologically, as we
develop from early life forms), we fashion all these complicated
explanations of what lies beyond what we directly experience,
e.g., other parts of the light spectrum.

Key is the fantastic accuracy of these models. Fifteen or
more decimal places of accuracy! Let us never forget this!

But I'd suggest that even the stance of a tiger is that of
an explorer who's ready to learn about some aspect of his
environment which has so far escaped him (like lunch). So
the tiger too in a sense understands that there is a reality
not dependent on his thoughts.

I would say that *epistemologically* fundamental are the
usual objects of childhood, which we still regard as
primary most of each day. You know there's a keyboard
in front of you, and about other practical realities
that do not permit you to post all day long on the
Everything list.

Lee

  It's just so much *clearer* to me to see them arising
  only after 13.7 billion years or so (locally) and that\
  they obtain *only* as a result of physical processes.
 
 That seems to be the most parsimonious explanation.
 
 Brent Meeker



Re: What We Can Know About the World

2005-07-31 Thread Russell Standish
I would not be surprised if there were some sort of duality
relationship (note: mathematical term employed here) between observer
moment and event, appropriately defined, however it is unclear how one
might adjust the definitions I gave to illuminate such a duality.

Cheers

On Sun, Jul 31, 2005 at 10:44:17AM -0400, Stephen Paul King wrote:
 Hi Russel,
 
A possibly related question. Given your definition of events and OMs, 
 does it not seem that they complement each other, assuming that events have 
 more quatities associated, such as 4-momentum-energy?
 
 Onward!
 
 Stephen
 

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Re: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread Russell Standish
On Sun, Jul 31, 2005 at 02:00:30PM -0700, John M wrote:
 I salute Lee's new subject designation.
 
 I believe if we are up to identifying concepts with
 common sense content as well, we should not restrict
 ourselves into the model-distinctions of (any) physics
 but generalize the meanings beyond such restrictions. 
 Of course: I am no physicist. My apologies.
 
 To Russel's 4 coordinates of (any?) event: how come
 the occurrence (event!) of a 'good idea' in my mind -
 (mind: not a thing, not a place, not time-restricted)
 should have t,x,y,z coordinates?
 
 Naively yours
 
 John Mikes
 

I would say that the event occurs in your brain (the neural correlate
of whatever is going on in your mind).  Whatever is going on in your
mind is something else - an observation perhaps.

I'm only pointing to my understanding of these terms - I'm willing to
change terminology if its useful to do so.

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RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread Lee Corbin
Russell writes

 John M. wrote

  I believe if we are up to identifying concepts with
  common sense content as well, we should not restrict
  ourselves into the model-distinctions of (any) physics
  but generalize the meanings beyond such restrictions. 

I agree: that is, so long as we can smoothly extend the 
concepts from daily life without conflict with other areas
of knowledge.

  To Russell's 4 coordinates of (any?) event: how come
  the occurrence (event!) of a 'good idea' in my mind -
  (mind: not a thing, not a place, not time-restricted)
  should have t,x,y,z coordinates?
 
 I would say that the event occurs in your brain (the neural correlate
 of whatever is going on in your mind).  Whatever is going on in your
 mind is something else - an observation perhaps.

Interesting note about mind: there is no German language
equivalent for it. Another reason to be *very* careful when
employing it. Sarcastic comment about the possibility of
Teutonic zombies elided.  

In a very deep (but non-mathematical) book, What is Thought?
by Eric Baum, the author decides to use mind as the name of
the program the brain runs, and it seems to work out well.

Lee



Re: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread Russell Standish
On Sun, Jul 31, 2005 at 08:09:46PM -0700, Lee Corbin wrote:
 
 Interesting note about mind: there is no German language
 equivalent for it. Another reason to be *very* careful when
 employing it. Sarcastic comment about the possibility of
 Teutonic zombies elided.  
 

I am surprised about that! The word der Geist sprang immediately to
mind as the translation.

According to my German/English disctionary, the relevant words were:

die Seele (psychology)
der Geist (intellect)
das Gemuet (feelings)
das? Lust  (desire/inclination) (bsp ich habe Lust zu es machen)

So Geist or Seele would in fact be the closest translations to how I
used mind above. Similarly in French, the word esprit would be
used. In English, these two words have become corrupted to Ghost and
Spirit, meaning much the same thing as each in English, but somewhat
different to the original language meanings. In Seele becomes Soul in English.

-- 
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RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread [EMAIL PROTECTED]
Lee wrote:
Interesting note about mind: there is no German language
equivalent for it. Another reason to be *very* careful when
employing it. Sarcastic comment about the possibility of
Teutonic zombies elided.  

In a very deep (but non-mathematical) book, What is Thought?
by Eric Baum, the author decides to use mind as the name of
the program the brain runs, and it seems to work out well.

Lee

What is going on? Another book is quoted and it too is right in front of me. I 
conclude there is a hidden web cam somewhere in my office I love causality. 
:)

As regards the book contents. I have to go through it in more detail but at 
first run through he makes precisely the same mistakes as all the other 
functionalists outlined so well in ...

Searle J. R. 1992. The rediscovery of the mind. Cambridge, Mass.: MIT Press.
Chapter 2

Once again: Baum formulates a metaphor based on a lack of imagination. The 
fallacy: that because our mind is so adept at constructing ontologies that 
therefore there is such things as 'things' in the universe. There are ways of 
constructing 'thought' that have no need for prescription of an ontology of any 
sort but where it can appear to be that way. Including Germans! 

Baum cannot make any empirical predictions of brain matter. Nice read...but no 
progress has been made except to shoehorn the received view into the limelight.

Are we ever going to get past this?

Cheers

Colin




RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread [EMAIL PROTECTED]
[Lee wrote:]
Interesting note about mind: there is no German language
equivalent for it. Another reason to be *very* careful when
employing it. Sarcastic comment about the possibility of
Teutonic zombies elided.  

In a very deep (but non-mathematical) book, What is Thought?
by Eric Baum, the author decides to use mind as the name of
the program the brain runs, and it seems to work out well.

Lee

What is going on? Another book is quoted and it too is right in front of me. I 
conclude there is a hidden web cam somewhere in my office I love causality. 
:)

As regards the book contents. I have to go through it in moiré detail but at 
first run through he makes precisely the same mistakes as all the other 
functionalists outlined so well in 

Searle J. R. 1992. The rediscovery of the mind. Cambridge, Mass.: MIT Press. 
xv, 270 p.

Once again: A metaphor based on a lack of imagination. The fallacy: that 
because our mind is so adept at constructing ontologies that therefore there is 
such things as 'things' in the universe. There are ways of constructing 
'thought' that have no need for prescription of an ontology of any sort yet 
appears to be so. Including Germans! 

Baum cannot make any empirical predictions of brain matter. Nice read...but no 
progress has been made except to shoehorn the received view into the limelight.

Are we ever going to get past this?

Cheers

Colin



RE: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread [EMAIL PROTECTED]
[Lee wrote:]
Interesting note about mind: there is no German language
equivalent for it. Another reason to be *very* careful when
employing it. Sarcastic comment about the possibility of
Teutonic zombies elided.  

In a very deep (but non-mathematical) book, What is Thought?
by Eric Baum, the author decides to use mind as the name of
the program the brain runs, and it seems to work out well.

Lee

What is going on? Another book is quoted and it too is right in front of me. I 
conclude there is a hidden web cam somewhere in my office I love causality. 
:)

As regards the book contents. I have to go through it in moiré detail but at 
first run through he makes precisely the same mistakes as all the other 
functionalists outlined so well in 

Searle J. R. 1992. The rediscovery of the mind. Cambridge, Mass.: MIT Press. 
xv, 270 p.

Once again: A metaphor based on a lack of imagination. The fallacy: that 
because our mind is so adept at constructing ontologies that therefore there is 
such things as 'things' in the universe. There are ways of constructing 
'thought' that have no need for prescription of an ontology of any sort yet 
appears to be so. Including Germans! 

Baum cannot make any empirical predictions of brain matter. Nice read...but no 
progress has been made except to shoehorn the received view into the limelight.

Are we ever going to get past this?

Cheers

Colin



Re: Clarification of Terms (was RE: What We Can Know About the World)

2005-07-31 Thread Aditya Varun Chadha
[LC]: 
 Well, Russell did also say that OMs and events seemed to him about as
 alike as chalk and cheese. It's starting to look that way: 

 So, alas, it seems that the firmly established meanings of
 event and observer moment can't really be said to be at
 all the same thing. (Folks like Russell and Hal have been
 using the term OM for years and years, and event has
 a pretty standard meaning in physics.) Observer moments have
 to do with something conscious (and, evidently, pretty complex).
 And of course, as Hal wrote later on, consciousness exists on
 a gray scale.

Then dare I say that any Theory based on this restricted definition
of OMs (happening to observers with consciousness/intelligence
comparable to ours) can never be as complete as a theory based on
the much simpler (and encompassing) notion of events.

Ok, the above sounds a bit arrogant on my part, but its just that when
I think of Big things like ToEs, I am much more comfortable without
the burden of assuming that I am special in some way. If it were so,
It would either be too much of a coincidence, or some act of a God
that I can never hope to explain to myself.

I can only agree to disagree by saying that any theory that explains
consciousness in terms of something more than just interference of
events on a HUGE scale, is pretty much the same as explaining away
coincidents as acts of a God: that unreachable, unfathomable entity.

-- 
Aditya Varun Chadha
adichad AT gmail.com
http://www.adichad.com



RE: What We Can Know About the World

2005-07-30 Thread Lee Corbin
Jesse writes

  I meant that your perceptions have physiological causes
  because your brain is a part of an obviously successful
  survival machine designed by evolution.
 
 Sure, but all of this is compatible with an idealist philosophy where 
 reality is made up of nothing but observer-moments at the most fundamental 
 level--something like the naturalistic panpsychism discussed on that 
 webpage I mentioned.

The disagreement I have with what you have written 
is that I do *not* see observer-moments as the most
fundamental entities. It's just so much *clearer*
to me to see them arising only after 13.7 billion
years or so (locally) and that they obtain *only* as
a result of physical processes.

When in the laboratory we examine the concepts mice
have of the world, we can easily see their limitations.
What would we think of mice who attempted to found all
of reality on mouse observer moments? Unfortunately
for the ultimate survival prospects of mice, they're
not capable of understanding evolution and their own
highly contingent appearance in it.

We are, and we should be talking as though we do understand.

 So does this mean you have no problem with idealism per 
 se, as long as it does not claim that there is no external reality 
 independent of *my* perceptions of it (even if this external reality 
 consists of nothing but other observer-moments, with some sort of measure 
 attached to each)? Is there anyone on this list who disagrees with the idea 
 of such an external reality? If not, then who are your criticisms aimed at?

It all depends on which way you think the explanations gain
the most mileage. You can start with these human observer
moments---which are in principle not comparable from one
entity to another and about which anyone's opinion is as
good as anyone else's, or you can start from what we have
learned so far about the universe we're embedded in.

Lee



RE: What We Can Know About the World

2005-07-30 Thread Jesse Mazer

Lee Corbin wrote:



Jesse writes

  I meant that your perceptions have physiological causes
  because your brain is a part of an obviously successful
  survival machine designed by evolution.

 Sure, but all of this is compatible with an idealist philosophy where
 reality is made up of nothing but observer-moments at the most 
fundamental

 level--something like the naturalistic panpsychism discussed on that
 webpage I mentioned.

The disagreement I have with what you have written
is that I do *not* see observer-moments as the most
fundamental entities. It's just so much *clearer*
to me to see them arising only after 13.7 billion
years or so (locally) and that they obtain *only* as
a result of physical processes.


Ok, but even if you don't agree with this speculation about observer-moments 
being the most fundamental entities, criticizing this speculation on the 
basis of it being anti-realist seems misguided. Also, as I said, my idea is 
that *all* possible causal patterns qualify as observer-moments, not just 
complex ones like ours. And I don't disagree that complex observer-moments 
are generally the result of a long process of evolution in the physical 
universe, it's just that I think at a most fundamental level the physical 
universe would be reducible to an enormous pattern of causal relationships 
which can be broken down into the relationships between a lot of 
sub-patterns, each of which is an observer-moment. The idea that physics 
should ultimately be explainable in terms of nothing more than causal 
relationships between events, and that higher-order concepts like 
particles and spacetime would emerge from this level of explanation, is 
an idea that some approaches to quantum gravity seem to favor, like loop 
quantum gravity--it's at least not out of the question that a final 
physical ToE would be about nothing more than causal relationships between 
events. If so, it would just be a different interpretation of this theory 
to say that each sub-network in this universal causal network would be an 
observer-moment of some kind, and my meta-physical speculation would be 
that you could *start* by looking at all possible finite causal networks and 
finding a unique measure on them, and the appearance of the huge causal 
network we call the physical universe could be derived from the 
relationships between all the sub-patterns implied by this unique measure. 
Obviously I don't expect you to agree with this speculation, but I'm just 
pointing out that it isn't anti-realist, nor does it contradict your 
statement about our particular type of consciousness being the result of a 
long process of evolution.




When in the laboratory we examine the concepts mice
have of the world, we can easily see their limitations.
What would we think of mice who attempted to found all
of reality on mouse observer moments?


Since there is nothing specifically human about my idea of 
observer-moments this analogy doesn't really work.


Jesse




Re: What We Can Know About the World

2005-07-30 Thread Stephen Paul King

Dear Jesse and Lee,

   I must interject!

- Original Message - 
From: Jesse Mazer [EMAIL PROTECTED]

To: [EMAIL PROTECTED]; everything-list@eskimo.com
Sent: Saturday, July 30, 2005 9:32 AM
Subject: RE: What We Can Know About the World



Lee Corbin wrote:

snip

[LC]
The disagreement I have with what you have written
is that I do *not* see observer-moments as the most
fundamental entities. It's just so much *clearer*
to me to see them arising only after 13.7 billion
years or so (locally) and that they obtain *only* as
a result of physical processes.

[JM]
Ok, but even if you don't agree with this speculation about 
observer-moments being the most fundamental entities, criticizing this 
speculation on the basis of it being anti-realist seems misguided. Also, 
as I said, my idea is that *all* possible causal patterns qualify as 
observer-moments, not just complex ones like ours. And I don't disagree 
that complex observer-moments are generally the result of a long process 
of evolution in the physical universe, it's just that I think at a most 
fundamental level the physical universe would be reducible to an 
enormous pattern of causal relationships which can be broken down into the 
relationships between a lot of sub-patterns, each of which is an 
observer-moment. The idea that physics should ultimately be explainable in 
terms of nothing more than causal relationships between events, and that 
higher-order concepts like particles and spacetime would emerge from 
this level of explanation, is an idea that some approaches to quantum 
gravity seem to favor, like loop quantum gravity--it's at least not out of 
the question that a final physical ToE would be about nothing more than 
causal relationships between events. If so, it would just be a different 
interpretation of this theory to say that each sub-network in this 
universal causal network would be an observer-moment of some kind, and my 
meta-physical speculation would be that you could *start* by looking at 
all possible finite causal networks and finding a unique measure on them, 
and the appearance of the huge causal network we call the physical 
universe could be derived from the relationships between all the 
sub-patterns implied by this unique measure. Obviously I don't expect you 
to agree with this speculation, but I'm just pointing out that it isn't 
anti-realist, nor does it contradict your statement about our particular 
type of consciousness being the result of a long process of evolution.




[SPK]

   It is my deep suspicion that this idea that there exists a unique 
measure on the equivalence class (?) of all possible finite causal 
networks is fallacious because it is equivalent to a observational P.o.V. 
that instantiates the *true* state of motion/rest of a system.
   For this measure to exist (in the a priori sense) then there must be an 
a priori instantiation and mutual comparison of all possible finite 
networks, a diffeomorphism matching. This is Barbour fallacy, the assumption 
that the results of a Process can obtain independent of the implementation 
of the Process.
   Unless one is going to make the leap of faith that it is possible for a 
computation to occur in zero time and necessitating zero resourse 
consuption - the ultimate everything from nothing violation of 
thermodynamics - this idea rapidly is seen to be absurd.
   When will you guys learn the lesson of Relativity: There is no prefered 
frame; there are only invariances.




[LC]
When in the laboratory we examine the concepts mice
have of the world, we can easily see their limitations.
What would we think of mice who attempted to found all
of reality on mouse observer moments?

[JM]
Since there is nothing specifically human about my idea of 
observer-moments this analogy doesn't really work.


[SPK]

   Nice try, Jesse! If our idea of an Observer Moment is to be coherent at 
all, there must exist OMs for *any* possible entity, including that of Mice 
and Men.


Onward!

Stephen

PS, my critique is missing something but I don't have the time to correct it 
now. :_( 



Re: What We Can Know About the World

2005-07-30 Thread Bruno Marchal


Le 30-juil.-05, à 17:18, Aditya Varun Chadha a écrit :



I think Mazer has put this across quite nicely, so I pause here.


I agree with you and Jesse Mazer.  Except that Jesse points on a 
speculation on the observer-moments, where I find enough to speculate 
on the truth on the comp hypothesis which is implicitly or explicitly a 
common hypothesis in both physics and cognitive science.





Since there is nothing specifically human about my idea of
observer-moments this analogy doesn't really work.

Jesse


I agree more with this version of observer-moments. An assumption
that an observer is a human or even a biological entity is being
narrow-minded IMO.


OK. Many people tend to forget that rather key point.


Bruno

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




Re: What We Can Know About the World

2005-07-30 Thread Bruno Marchal


Le 30-juil.-05, à 08:53, Lee Corbin a écrit :


When in the laboratory we examine the concepts mice
have of the world, we can easily see their limitations.
What would we think of mice who attempted to found all
of reality on mouse observer moments?


Give them time! Mice will probably discover that reality is made of 
mice observer moments the day they will bet on identifying mice with 
hopefully consistent machine.


Bruno

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




RE: What We Can Know About the World

2005-07-30 Thread chris peck

Hi Lee;

Im dont know. Im in two minds now. I think my own objection to Sam Johnsons 
'refutation' is based on a very strict definition of knowledge which entails 
some notion of certainty. To be only 99% certain is not enough on this 
definition to know something. Its a little sceptical isnt it? We lock people 
away on a weaker definition that that. We dont require certainty to inhibit 
someones freedom, why then in philosophy or science? Certainly the 
consequences of relaxing such a definition of knowledge are only a fraction 
as serious in those disciplines. Well, infact in science too we dont apply 
that much rigour, theories are corroborated or not to a certain degree. They 
stand or fall on pragmatic grounds. People use Newton's math in many 
circumstances, whilst knowing Einstein's math reflects reality more 
accurately. It doesnt matter when Newton's math are suffiecient practically 
speaking.


Logically in kicking the stone SJ doesnt raise a counterargument many 
rationalists are going to worry about, but he does make a powerful appeal to 
our intuition that ought to have worried an empiricist like Berkley - any 
empiricist really. The very fact he invokes a God (unempirically) leads one 
to argue why such an inference is permissable, but the inference of a 
genuinely extended world is not. They both serve the same purpose, to 
maintain the existance of things when unpercieved.


Beyond the impressive and dazzling display of mathematics here and beyond 
Berkley's almost pathological suspicion of perceptual inference, any theory 
that denies extension is deeply unintuitive. Clearly the onus is on 
Idealists - of whatever ilk - to present an explanation of non - extended 
extension that makes some sense, rather than just make the mind boggle. It 
does feel sometimes as though Idealists are sophists tinkering with logic 
more than reality - how things could have been, rather than are.


Why, I feel like asking, would the cause of my perceptions be so different 
from the picture of the world effected? Doesnt it make more sense to say 
that the world appears extended, material and not 'ideal' because that is in 
fact how it is, there must be a symmetry between what is percieved and what 
causes those perceptions even if we can not probe that symmetry to any 
satisfaction. Im not sure that a reaist would be happy by transcendental 
argument like that, but it makes a little sense to me.


Perhaps there is something in Sam Johnson's quip afterall.

Many Regards

Chris.


From: Lee Corbin [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: EverythingList everything-list@eskimo.com
Subject: RE: What We Can Know About the World
Date: Fri, 29 Jul 2005 20:29:14 -0700

Jesse writes

 Lee Corbin wrote:
 
 Chris writes
 
   Samuel Johnson did refute Berkeley.
  
   The main thrust of Berkley's argument is to show
   that sensory perception is
   indirect, and therefore the existence of a
   material cause for those perceptions is an
   unjustified inference in contravention of
   Occam's razor. The argument that the look,
   texture, smell, taste and sound of an object
   are apprehended indirectly is successful in
   my opinion, and I don't feel any need
   to defend it unless someone really thinks
   a defence is required.
 
  Do *you* contend that the existence of material
  causes for your perceptions is unjustified? Good grief.

 How do you define material causes?

I stay clean away from definitions, sorry. I gave
reasons earlier why definitions don't work.

I expect that you want to know what was meant when
Chris and I were writing.

I'll get to that.

 It seems to me you are conflating idealism with
 solipsism, or the idea that the outside universe
 doesn't have any existence outside of my perception
 of it, and that there are no objective truths about
 external reality outside of my subjective ideas about
 it.

Well, no, I understand the difference, and agree with
the characterization of it you gave. It sounds as though
you believe in the existence of things out there
independent of your perceptions of it.  That is, if
you were given a drug that cut off your senses, then
you'd figure that the outside world was still there
even though you could no longer sense it. We agree
on that.

Customarily (whether people like you and me are sensing
that outside world or not), we believe that for the most
part here on Earth, at least, there are a lot of material
objects around. Tables, chairs, rocks, and cars for
instance.

We can then go further and say that in this model, even
peoples bodies are material objects, and obey the usual
high school laws of physics. (They have mass, often
reflect light, and so forth.)

So by

  Do *you* contend that the existence of material
  causes for your perceptions is unjustified?

I meant that your perceptions have physiological causes
because your brain is a part of an obviously successful
survival machine designed by evolution.

Lee

RE: What We Can Know About the World

2005-07-30 Thread Lee Corbin
Aditya writes

 At the risk of barging in once again,

Oh, please forget about all that! No one should apologize for it. Ever.

I (Lee) had written

  When in the laboratory we examine the concepts mice
  have of the world, we can easily see their limitations.
  What would we think of mice who attempted to found all
  of reality on mouse observer moments?

and Jesse wrote

 Since there is nothing specifically human about my idea of 
 observer-moments this analogy doesn't really work.

I meant only to say that it's obvious how limited the ideas
of biological machines can be, *especially* when they consult
their subjective ideas.

Aditya continues

 I agree more with this version of observer-moments. An assumption
 that an observer is a human or even a biological entity is being
 narrow-minded IMO.

Quite right.

 I think a common error that we make is to assume some vague concept of
 consciousness and then limit our notion of observation as a process
 that only conscious entities can undertake/undergo.

That sounds so sensible.

 We only believe we are conscious, we have no proof or physical
 evidence, because ALL our thought-systems ASSUME consciousness, it is
 just a human axiom. Or taken another way, conscious is a human-made
 word representing just the way we (and our close relatives for the
 relatively liberal) work. Nothing special about it.

I *think* that that has to be right.

 Why not allow observation to be any event in which any set of
 entities (even the most fundamental entities) interact among each
 other in any way? After all, human observation can be explained as the
 physical interactions of our senses/brain with other entities.
 (i.e. just events)
 
 Notice that this definition (or description, for the
 definition-averse) cuts through a WHOLE lot of assumptions,
 ultimately revealing (at least to me) the IDENTITY (sameness) of the
 terms Event and Observer-Moment.

I suspect that we will be driven to accept this just as you
have written it. 

 Further, no version of Observation adopted by any Idealists violates
 this definition. Also, the converse is not hard to accept if we are
 just a bit more open minded (doing away with the speciality of human
 thought).

Well, taken literally your statement cannot be correct. There
will be versions of the concept Observation that will be
adopted by some idealists that indeed violate your definition.

 In the system that emerges, yes, Observer-Moments alone ARE a
 candidate for giving us a ToE, but for this, they cannot be
 differentiated from our simple notion of Event. (The realist
 favours the term Event, the Idealist favours Observer-Moment)

By event do you mean an event that leaves a record? Just
wondering.  Meanwhile, yes: if we have observer moments, 
and mice have observer moments, then so will ants and even
thermometers. (A thermometer observes the temperature and
its mercury expands or contracts accordingly.)

Thanks for a nice try at clearing up what Jesse, at least,
and I were discussing.

Lee

 I have been tilted towards what this list seems to call realism
 since the start, but I maintain that digging deep enough, the realism
 and idealism being discussed here aren't that different if we just use
 a Realish-Idealish, Idealish-Realish dictionary, and I believe all
 terms in either language have equivalent translations in the other.
 
 I think Mazer has put this across quite nicely, so I pause here.



(offlist) RE: What We Can Know About the World (fwd)

2005-07-30 Thread Brent Meeker

 -Original Message-
 From: Brent Meeker [mailto:[EMAIL PROTECTED]
 Sent: Saturday, July 30, 2005 12:29 AM
 To: Lee Corbin
 Subject: Re: What We Can Know About the World
 
 
 On 29-Jul-05, you wrote:
 
  Jesse writes
  
  I meant that your perceptions have physiological causes
  because your brain is a part of an obviously successful
  survival machine designed by evolution.
  
  Sure, but all of this is compatible with an idealist philosophy where
  reality is made up of nothing but observer-moments at the most
  fundamental level--something like the naturalistic panpsychism
  discussed on that webpage I mentioned.
  
  The disagreement I have with what you have written 
  is that I do *not* see observer-moments as the most
  fundamental entities. 
 
 There are two distinct kinds of fundamental.  OMs may be
epistemologically
 fundamental, but not ontologically fundamental.  Starting with what we
 think we know, we develop a model of reality which goes beyond what we
 directly experience.  It's the best explanation of our experience that
 there is a reality not dependent on our thoughts.
 
 
 It's just so much *clearer*
  to me to see them arising only after 13.7 billion
  years or so (locally) and that they obtain *only* as
  a result of physical processes.
 
 That seems to be the most parsimonious explanation.
 
 
 
 Brent Meeker




RE: What We Can Know About the World

2005-07-29 Thread Jesse Mazer

Lee Corbin wrote:


Chris writes

 Samuel Johnson did refute Berkeley.

 The main thrust of Berkley's argument is to show that sensory perception 
is

 indirect, and therefore the existence of a material cause for those
 perceptions is an unjustified inference in contravention of Occam's 
razor.
 The argument that the look, texture, smell, taste and sound of an object 
are
 apprehended indirectly is successful in my opinion, and I don't feel any 
need

 to defend it unless someone really thinks a defence is required.

Do *you* contend that the existence of material causes for your
perceptions is unjustified?  Good grief.


How do you define material causes? It seems to me you are conflating 
idealism with solipsism, or the idea that the outside universe doesn't have 
any existence outside of my perception of it, and that there are no 
objective truths about external reality outside of my subjective ideas about 
it. But even though I lean towards idealism, I certainly believe that other 
minds (or 'observer-moments') have an independent existence outside of my 
perceptions of them when I interact with them (with 'interactions' explained 
in terms of different oberver-moments affecting one another's measure, 
perhaps); I see other minds from the outside, but they have an independent 
experience of themselves from the inside. And I also lean towards 
panpsychism, which would imply that everything we label as a physical 
process can really be understood as just another observer-moment (perhaps a 
very simple one) viewed from the outside. So rocks, stars, quarks, etc. 
would have just as much of an independent existence as other people, in 
terms of this hypothesis. I suggest checking out the article on 
Naturalistic Panpsychism at http://www.hedweb.com/lockwood.htm which gives 
a pretty good summary of the idea, although I don't agree with every aspect 
of his version of it.


Jesse




RE: What We Can Know About the World

2005-07-29 Thread Lee Corbin
Jesse writes

 Lee Corbin wrote:
 
 Chris writes
 
   Samuel Johnson did refute Berkeley.
  
   The main thrust of Berkley's argument is to show
   that sensory perception is
   indirect, and therefore the existence of a
   material cause for those perceptions is an
   unjustified inference in contravention of
   Occam's razor. The argument that the look,
   texture, smell, taste and sound of an object
   are apprehended indirectly is successful in
   my opinion, and I don't feel any need
   to defend it unless someone really thinks
   a defence is required.
 
  Do *you* contend that the existence of material
  causes for your perceptions is unjustified? Good grief.
 
 How do you define material causes?

I stay clean away from definitions, sorry. I gave
reasons earlier why definitions don't work.

I expect that you want to know what was meant when
Chris and I were writing.

I'll get to that.

 It seems to me you are conflating idealism with
 solipsism, or the idea that the outside universe 
 doesn't have any existence outside of my perception
 of it, and that there are no objective truths about
 external reality outside of my subjective ideas about 
 it.

Well, no, I understand the difference, and agree with
the characterization of it you gave. It sounds as though
you believe in the existence of things out there
independent of your perceptions of it.  That is, if
you were given a drug that cut off your senses, then
you'd figure that the outside world was still there
even though you could no longer sense it. We agree
on that.

Customarily (whether people like you and me are sensing
that outside world or not), we believe that for the most
part here on Earth, at least, there are a lot of material
objects around. Tables, chairs, rocks, and cars for 
instance.

We can then go further and say that in this model, even
peoples bodies are material objects, and obey the usual
high school laws of physics. (They have mass, often
reflect light, and so forth.)

So by

  Do *you* contend that the existence of material
  causes for your perceptions is unjustified?

I meant that your perceptions have physiological causes
because your brain is a part of an obviously successful
survival machine designed by evolution.

Lee



RE: What We Can Know About the World

2005-07-29 Thread Jesse Mazer

Lee Corbin wrote:



Jesse writes

 Lee Corbin wrote:
 
 Chris writes
 
   Samuel Johnson did refute Berkeley.
  
   The main thrust of Berkley's argument is to show
   that sensory perception is
   indirect, and therefore the existence of a
   material cause for those perceptions is an
   unjustified inference in contravention of
   Occam's razor. The argument that the look,
   texture, smell, taste and sound of an object
   are apprehended indirectly is successful in
   my opinion, and I don't feel any need
   to defend it unless someone really thinks
   a defence is required.
 
  Do *you* contend that the existence of material
  causes for your perceptions is unjustified? Good grief.

 How do you define material causes?

I stay clean away from definitions, sorry. I gave
reasons earlier why definitions don't work.

I expect that you want to know what was meant when
Chris and I were writing.

I'll get to that.

 It seems to me you are conflating idealism with
 solipsism, or the idea that the outside universe
 doesn't have any existence outside of my perception
 of it, and that there are no objective truths about
 external reality outside of my subjective ideas about
 it.

Well, no, I understand the difference, and agree with
the characterization of it you gave. It sounds as though
you believe in the existence of things out there
independent of your perceptions of it.  That is, if
you were given a drug that cut off your senses, then
you'd figure that the outside world was still there
even though you could no longer sense it. We agree
on that.

Customarily (whether people like you and me are sensing
that outside world or not), we believe that for the most
part here on Earth, at least, there are a lot of material
objects around. Tables, chairs, rocks, and cars for
instance.

We can then go further and say that in this model, even
peoples bodies are material objects, and obey the usual
high school laws of physics. (They have mass, often
reflect light, and so forth.)

So by

  Do *you* contend that the existence of material
  causes for your perceptions is unjustified?

I meant that your perceptions have physiological causes
because your brain is a part of an obviously successful
survival machine designed by evolution.




Sure, but all of this is compatible with an idealist philosophy where 
reality is made up of nothing but observer-moments at the most fundamental 
level--something like the naturalistic panpsychism discussed on that 
webpage I mentioned. So does this mean you have no problem with idealism per 
se, as long as it does not claim that there is no external reality 
independent of *my* perceptions of it (even if this external reality 
consists of nothing but other observer-moments, with some sort of measure 
attached to each)? Is there anyone on this list who disagrees with the idea 
of such an external reality? If not, then who are your criticisms aimed at?


Jesse




Re: What We Can Know About the World

2005-07-28 Thread Bruno Marchal


Le 27-juil.-05, à 20:11, Lee Corbin a écrit :


Build carefully upon what is simple and knowable, and keep the
wild theories to a minimum.  Even then, the world is hardly
simple, but at least we've got a chance.


I agree completely.





In other words, dualists and materialists contravene Occam, not
idealists. I don't see how Johnson refuted that.


Materialists do not contravene Occam.


Subtance-materialists does. Imo. (but we can go back on this latter).



The simplest explanation is
that there is a world out there and that our brains are survival
machines designed by evolution to thrive in it.


I agree. But it is just the recent logical path. Atoms and waves also 
are survival machines, then eventually the laws of physics themselves 
emerge from simpler things (like immaterial relations between prime 
numbers for example).




The phantasms that
occasionally infest our awareness and consciousness causally arise
as side-effects of how our brains work, that's all.


I disagree completely. Take a physicist of mass M, and another one of 
mass m. physicists obey to the laws of physics, all right? (It is *the* 
Everett motto). So the physicists will attract each other proportionaly 
to mM/r^2 (r being the distance between the two physicists). Believe me 
but that attraction is negligible compared to the usual psychological 
repulsions and attraction among colleagues!
Consciousness is the most powerful force in the multi ... multiverses. 
It entails the biggest self-speeding up of self-organisation of 
information possible. Fears can transform itself into bombs, cathedral 
or libraries.
And then, just defining consciousness by unconscious (automated) 
inference of self-consistency, not only explains this self-speeding up  
process, but it can explain why matter or consciousness *looks* 
epiphenomenal.
(The self-speeding up is related to theorems by Godel and Blum in logic 
and computer science.)
(This can also be related to works by I.J. Goods on a modelisation of 
free-will in term of relative computations speed).




The simplest explanation does *not* start with perceptions and
all the rest of that stuff, for a number of reasons. The primary
reason is that you can't truly communicate them to others---after
all, your brain may not work the same as theirs. As Wittgenstein
said, Of what we cannot speak thereof we must be silent.



Well, apparently, either Wittgenstein missed the opportunity to remain 
silent, or we have the right to ask him What are you really talking 
about, M. Wittgenstein?. But I agree with Wittgenstein: there exists 
propositions which although true cannot be communicated or justified. 
(And, as a reminder, I recall that Dt or equivalently ~Bf, are such 
proposition in the near death OMs of the Papaioannou's multiverses. 
This at least gives a picture capable of making Wittgenstein 
consistent. Good because with such sentences (also said by Lao Tseu 
btw) we are playing near ... inconsistency.


Bruno

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




Re: What We Can Know About the World

2005-07-28 Thread janos nagyapu
Please see interleaved in the remnants of the text
below
John Mikes

--- Bruno Marchal [EMAIL PROTECTED] wrote:

 
 Le 27-juil.-05, à 20:11, Lee Corbin a écrit :
 
  Build carefully upon what is simple and knowable,
 and keep the
  wild theories to a minimum.  Even then, the world
 is hardly
  simple, but at least we've got a chance.
 
 I agree completely.
 
Only 'that much' is knowable, especially simple, so we
have no choice. Wild theories? Who is to label it?
 
 
  In other words, dualists and materialists
 contravene Occam, not
  idealists. I don't see how Johnson refuted that.
 
  Materialists do not contravene Occam.
 
 Subtance-materialists does. Imo. (but we can go back
 on this latter).
 
Occam principlised our human knowledge based model. It
may well be that there are much more simple solutions
beyond our horizon of knowability. Even our present
level of epistemicly supplied cognitive inventory is
VERY limited - to say it mildly. 
 
  The simplest explanation is
  that there is a world out there and that our
 brains are survival
  machines designed by evolution to thrive in it.
 
 I agree. But it is just the recent logical path.
 Atoms and waves also 
 are survival machines, then eventually the laws of
 physics themselves 
 emerge from simpler things (like immaterial
 relations between prime 
 numbers for example).
 
Simplest...see above. out there? we are 'out there'.
There is no US and the rest of the world out there.
What are we so special ABOVE(?) those figments we call
atoms etc. to put our 'mentality' (ideational basis)
into a special box? It may be different (for us),
maybe we see more complexity in ourselves because we
know more about ourselves. 
 
  The phantasms that
  occasionally infest our awareness and
 consciousness causally arise
  as side-effects of how our brains work, that's
 all.
 
 I disagree completely. Take a physicist of mass M,
 and another one of 
 mass m. physicists obey to the laws of physics, all
 right? (It is *the* 
 Everett motto).
Snip the enjoyable monolog about physicists as
objects.
*
I cannot 'disagree completely' untill we agree in the
elusive phantasm called consciousness. No such
'thing'.
 Consciousness is the most powerful force in the
 multi ... multiverses. 
SNIP
 And then, just defining consciousness by
 unconscious (automated) 
 inference of self-consistency, not only explains
 this self-speeding up  
 process, but it can explain why matter or
 consciousness *looks* 
 epiphenomenal.
epi (or endo) to what?
*
 
  The simplest explanation does *not* start with
 perceptions and
  all the rest of that stuff, for a number of
  reasons. The primary
  reason is that you can't truly communicate them to
 others---after
  all, your brain may not work the same as theirs.
 As Wittgenstein
  said, Of what we cannot speak thereof we must be
 silent.
 
 
 Well, apparently, either Wittgenstein missed the
 opportunity to remain silent,
BRAVO
 or we have the right to ask him What are
 you really talking 
 about, M. Wittgenstein?. But I agree with
 Wittgenstein: there exists 
 propositions which although true cannot be
 communicated or justified. 
SNIP
 Bruno
 
 http://iridia.ulb.ac.be/~marchal/
 
Remark: ever since we have a way of communication we
try to complete (verb) our feeble imagination about
the world according to the ever increasing level of
the knowables. Our models (so far) have always been
totally boundary-enclosed and we did not even think
beyond them 
Natural laws. logical laws, ONE cause, the axioms
and givens to make such views work AND math as the
main adjuvant of that fantastic and fruitful edifice
we have built called scientific worldview. All human
thought.

Only lately (½ c.?) do some looked-down minds attempt
to 'look beyond' - even violating the Witgenstein
norm.

J.M. 

 



RE: What We Can Know About the World

2005-07-27 Thread chris peck

Samuel Johnson did refute Berkeley.


The main thrust of Berkley's argument is to show that sensory perception is 
indirect, and therefore the existance of a material cause for those 
perceptions is an unjustified inference in contravention of Occam's razor. 
The argument that the look, texture, smell, taste and sound of an object are 
apprehended indirectly is successful in my opinion, and I dont feel any need 
to defend it unless someone really thinks a defence is required. Aterall, on 
any view there is a translation of 'signals' of many different forms (light 
waves, sound waves) , into various 'signals' of the same form (neurons 
firing) which become synaesthetically unified into a whole, such that we 
associate the smell, taste, colour and texture of say an orange, as being 
qualities of the same object. That kicking a rock hurts, for example, does 
not establish that the 'material world' is apprehended directly, or that the 
concept of a material world is anything more than an inference.


I dont think this is really what Johnson meant, but the only challenge his 
'refutation' genuinely offers is with regards to extension. How is the size 
of an object,  or its ability to exist and move (by being kicked) in a 3 
dimensional realm, derived from perception alone? Our grasp of a 3 
dimensional world is dependent on our stereoscopic perception. Its only when 
there are two seperate perceptions of the world of the same type (eg. left 
and right eye) that we apprehend a properly 3 dimensionally world, each of 
these perceptions is however intrinsically 2 dimensional. It is the mental 
combination of these slightly different images from which we derive an 
extended world. This is probably more controversial, but Berkley's move here 
is to insist that it we have enough information now to create the appearance 
of a 3 dimensional world out of elements that are not intrinsically 
extended. By Occam then, we should not infer something for which there is no 
requirement - however firmly that inference has been imbedded in us. We 
should stick to using what we can know directly. Perception.


In otherwords, dualists and materialists contravene Occam, not idealists. i 
dont see how Johnson refuted that.


regards.


From: Lee Corbin [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: everything-list@eskimo.com
Subject: What We Can Know About the World
Date: Tue, 26 Jul 2005 02:19:49 -0700

Stathis writes

  When 99% of the human race use the word reality, they mean
  the world outside their skins.
 
  If you sacrifice our common understanding of reality, then
  you'll find yourself in a hole out of which you'll never climb.

 Yes, but what *is* this 3D world we can all stub our toe on?

Korzybski would warn: beware the is of identity  :-)

 If we go back to the start of last century, Rutherford's
 quaintly pre-QM atom, amazingly, turned out to be mostly
 empty space. Did this mean that, suddenly, it doesn't hurt
 when you walk into a brick wall, because it isn't nearly as
 solid as you initially thought it was? Of course not; our
 experience of the world is one thing, and the reality
 behind the experience is a completely different thing.

That's *exactly* right.  We *could* have been designed by
evolution not to hurt when we walked into a wall. For certain
reasons, we were not designed that way.

 If it is discovered tomorrow beyond any doubt that the
 entire universe is just a game running in the down time
 on God's pocket calculator, how is this fundamentally
 different to discovering that, contrary to appearances,
 atoms are mostly empty space, or subatomic particles have
 no definite position, or any other weird theory of modern
 physics?

Good analogy!  The world surprises us all the time, especially
the more we learn about it.  It would be bizarre if it did not,
(we'd probably have to abandon most of our theories).

 And how could, say, the fact that brick walls feel solid enough
 possibly count as evidence against such an anti-realist theory?

Occam's razor.  We go with the simplest theory.  Imagine
that you and I believe we are standing next to a wall.
Our conjecture is that it has certain properties.  We
may need it to protect us. If we're wrong, nature will
make short work of us.  That we have survived this long
is a strong indication that the wall really is there.
In fact, on some level of practicality, it is foolish
to debate the existence of the wall. Samuel Johnson
did refute Berkeley.

Lee



_
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Re: What We Can Know About the World

2005-07-27 Thread Bruno Marchal


Le 27-juil.-05, à 15:55, chris peck a écrit :


Samuel Johnson did refute Berkeley.


The main thrust of Berkley's argument is to show that sensory 
perception is indirect, and therefore the existance of a material 
cause for those perceptions is an unjustified inference in 
contravention of Occam's razor. The argument that the look, texture, 
smell, taste and sound of an object are apprehended indirectly is 
successful in my opinion, and I dont feel any need to defend it unless 
someone really thinks a defence is required. Aterall, on any view 
there is a translation of 'signals' of many different forms (light 
waves, sound waves) , into various 'signals' of the same form (neurons 
firing) which become synaesthetically unified into a whole, such that 
we associate the smell, taste, colour and texture of say an orange, as 
being qualities of the same object. That kicking a rock hurts, for 
example, does not establish that the 'material world' is apprehended 
directly, or that the concept of a material world is anything more 
than an inference.


I dont think this is really what Johnson meant, but the only challenge 
his 'refutation' genuinely offers is with regards to extension. How is 
the size of an object,  or its ability to exist and move (by being 
kicked) in a 3 dimensional realm, derived from perception alone? Our 
grasp of a 3 dimensional world is dependent on our stereoscopic 
perception. Its only when there are two seperate perceptions of the 
world of the same type (eg. left and right eye) that we apprehend a 
properly 3 dimensionally world, each of these perceptions is however 
intrinsically 2 dimensional. It is the mental combination of these 
slightly different images from which we derive an extended world. This 
is probably more controversial, but Berkley's move here is to insist 
that it we have enough information now to create the appearance of a 3 
dimensional world out of elements that are not intrinsically extended. 
By Occam then, we should not infer something for which there is no 
requirement - however firmly that inference has been imbedded in us. 
We should stick to using what we can know directly.


I agree ontologically. But I disagree epistemologically. It is like 
with Mendeleev classification of the elements (atoms). It was wise to 
infer the existence of unknown atoms from the holes provided by the 
classification. So a view-point should always to be completed as much 
as possible. This makes it possible to get in a quicker way some 
possible contradiction (internal or with facts). Remember that Occam 
was proposing the razor for the number of hypotheses. In this list most 
people tend to agree that we should have as few postulates as possible. 
This makes the set of possibilities bigger and we take it as face value 
(most are inspired or encouraged by Everett quantum mechanics (the 
many world).




Perception.


Oops!  Mhhh... Tricky word which has a foot in knowing (first person) 
and a foot in some infered third person describable reality.





In otherwords, dualists and materialists contravene Occam, not 
idealists. i dont see how Johnson refuted that.



Very well said. But idealist are not necessarily solispsist, and once 
you can acknowledge the existence of one other, or even just this set 
{1, 2, 3, 4, ...} (in the company of addition and multiplication),  
then there is a vast realm full of ... surprises (counter-intuitive 
truth which we can know but only indirectly. (A little like you need 
two eyes to imagine 3D, you need two brains to make a genuine proof or 
a genuine bet).


Bruno





regards.


From: Lee Corbin [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: everything-list@eskimo.com
Subject: What We Can Know About the World
Date: Tue, 26 Jul 2005 02:19:49 -0700

Stathis writes

  When 99% of the human race use the word reality, they mean
  the world outside their skins.
 
  If you sacrifice our common understanding of reality, then
  you'll find yourself in a hole out of which you'll never climb.

 Yes, but what *is* this 3D world we can all stub our toe on?

Korzybski would warn: beware the is of identity  :-)

 If we go back to the start of last century, Rutherford's
 quaintly pre-QM atom, amazingly, turned out to be mostly
 empty space. Did this mean that, suddenly, it doesn't hurt
 when you walk into a brick wall, because it isn't nearly as
 solid as you initially thought it was? Of course not; our
 experience of the world is one thing, and the reality
 behind the experience is a completely different thing.

That's *exactly* right.  We *could* have been designed by
evolution not to hurt when we walked into a wall. For certain
reasons, we were not designed that way.

 If it is discovered tomorrow beyond any doubt that the
 entire universe is just a game running in the down time
 on God's pocket calculator, how is this fundamentally
 different to discovering that, contrary to appearances,
 atoms are mostly empty space, or subatomic particles have
 

Re: What We Can Know About the World

2005-07-27 Thread chris peck

Hi Bruno;

There are problems with Berkley to be sure, but I dont think Johnson had 
much of a grasp of them. Are there good objections to Berkley? Certainly. 
Did SJ propose any? Not really.


I agree ontologically. But I disagree epistemologically. It is like with 
Mendeleev classification of the elements (atoms). It was wise to infer the 
existence of unknown atoms from the holes provided by the classification.


I have a similar approach to Berkley which revolves around Occam's principle 
of sufficiency. With regards to perception being the essence of existance, 
what happens when things are not percieved? A perception or idea must exist 
in a mind, right? Furthermore, in some sense a mind must be concieved of (by 
Berkley) in terms of ideas too, So what are minds percieved by? Gaps like 
these in my opinion, break Occam's principle of sufficiency. It leads to 
Berkley positing a God which percieves all ideas (unpercieved things and 
percieving minds). This enables 'the dark side of the moon' to exist 
unpercieved and for percieving minds themselves to exist. However, I think 
in satisfying the sufficiency principle, Berkley now breaks Occam's appeal 
for simplicity.


In a way he has been forced to make a non empirical deduction which should 
really be abhorrent to him. Perhaps an ad hoc invention might be more 
accurate, in so far as God is invoked for theoretical difficulties 
primarily.



So a view-point should always to be completed as much as possible.


As shown, Berkley arguably does complete his theory. However, not in a way 
that 'makes it possible to get in a quicker way some possible contradiction 
(internal or with facts).'.


At this point then, Berkley is on unsteady ground, because we want some 
means of falsification, I feel cheated that there isnt one, especially from 
an empiricist. Internally though, I think he is largely consistant.



Perception.


Oops!  Mhhh... Tricky word which has a foot in knowing (first person)


Firstly, I use the word in the sense that this is what Berkley would have 
used. I think there is a problem with how Berkley uses it. I think he plays 
on a similarity between 'idea', 'mind' and 'perception'. I think you can 
trap Berkley into a position where he has to admit that ideas are percieved, 
which suggests again a two part process, an indirection. A translation. 
However, with regards to :



and a foot in some infered third person describable reality.


Berkley has a third person describable reality. It is just not a material 
one. Berkley is no solipsist. He does not deny objective reality. He basis 
reality on a different substance and preserves it in the mind of God. Like 
Leibniz. This is why Johnson is wrong, he thinks that Berkley is denying the 
existance of things. Its a consequence of thinking dualistically. Dualists 
naturally regard 'mentality' as less substantial than matter, Idealists 
dont. It is their substance of choice in a sense. Materialism and Idealism 
are very similar. Its monism really, as opposed to dualism. Think of the way 
Marx (materialism) flips Hegel (idealism).




In otherwords, dualists and materialists contravene Occam, not idealists. 
i dont see how Johnson refuted that.



Very well said. But idealist are not necessarily solispsist, and once you 
can acknowledge the existence of one other, or even just this set {1, 2, 
3, 4, ...} (in the company of addition and multiplication),  then there is 
a vast realm full of ... surprises (counter-intuitive truth which we can 
know but only indirectly. (A little like you need two eyes to imagine 3D, 
you need two brains to make a genuine proof or a genuine bet).


Not quite sure what you are getting at here The truth is always 
incomplete from a single perspective?


Many Regards

Chris.




Bruno





regards.


From: Lee Corbin [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: everything-list@eskimo.com
Subject: What We Can Know About the World
Date: Tue, 26 Jul 2005 02:19:49 -0700

Stathis writes

  When 99% of the human race use the word reality, they mean
  the world outside their skins.
 
  If you sacrifice our common understanding of reality, then
  you'll find yourself in a hole out of which you'll never climb.

 Yes, but what *is* this 3D world we can all stub our toe on?

Korzybski would warn: beware the is of identity  :-)

 If we go back to the start of last century, Rutherford's
 quaintly pre-QM atom, amazingly, turned out to be mostly
 empty space. Did this mean that, suddenly, it doesn't hurt
 when you walk into a brick wall, because it isn't nearly as
 solid as you initially thought it was? Of course not; our
 experience of the world is one thing, and the reality
 behind the experience is a completely different thing.

That's *exactly* right.  We *could* have been designed by
evolution not to hurt when we walked into a wall. For certain
reasons, we were not designed that way.

 If it is discovered tomorrow beyond any doubt that the
 entire universe is just 

RE: What We Can Know About the World

2005-07-27 Thread Lee Corbin
Chris writes

 Samuel Johnson did refute Berkeley.
 
 The main thrust of Berkley's argument is to show that sensory perception is 
 indirect, and therefore the existence of a material cause for those 
 perceptions is an unjustified inference in contravention of Occam's razor. 
 The argument that the look, texture, smell, taste and sound of an object are 
 apprehended indirectly is successful in my opinion, and I don't feel any need 
 to defend it unless someone really thinks a defence is required.

Do *you* contend that the existence of material causes for your
perceptions is unjustified?  Good grief.

As for your other statement, these senses are indeed, just as you
say, apprehended indirectly. (That's the difference between realists
and naive realists, e.g., children.) Of course there is no need for
you to defend that, because no one here would disagree.

 Afterall, on any view there is a translation of 'signals' of many
 different forms (light waves, sound waves) , into various 'signals'
 of the same form (neurons firing) which become synaesthetically
 unified into a whole, such that we associate the smell, taste,
 colour and texture of say an orange, as being qualities of the
 same object.

Of course. 

 ...Berkley's move here is to insist that it we have enough
 information now to create the appearance of a 3 dimensional
 world out of elements that are not intrinsically extended.

I'm not sure what you mean. By elements already in the brain?
Yes, that's true. But they got into the brain by the aforementioned
processes, as you know. Don't lose sight of the fact that almost
all the information came from outside.

 By Occam then, we should not infer something for which there is no 
 requirement - however firmly that inference has been imbedded in us.
 We should stick to using what we can know directly. Perception.

You don't know all this complicated crap (neurons, perception, 
inference, the whole nine yards) nearly as well as you know
the monitor in front of you.  The problem is the word know.

The first things you knew consciously, and knew well, were things
outside your skin: your mother and father, and tables and chairs.
Let's resist the temptation to begin using words in other ways.

Much, much later you ceased being a naive realist and became a
realist. You understood that there can be things like optical
illusions, and altered states of consciousness. You even understood
that your own exalted consciousness is not anything to be utterly
depended upon, because one can be sick or crazy. (If it hasn't 
happened to you yet, then just stay around a few more decades.)

Build carefully upon what is simple and knowable, and keep the
wild theories to a minimum.  Even then, the world is hardly
simple, but at least we've got a chance. 

 In other words, dualists and materialists contravene Occam, not
 idealists. I don't see how Johnson refuted that.

Materialists do not contravene Occam. The simplest explanation is
that there is a world out there and that our brains are survival
machines designed by evolution to thrive in it. The phantasms that
occasionally infest our awareness and consciousness causally arise
as side-effects of how our brains work, that's all.

The simplest explanation does *not* start with perceptions and
all the rest of that stuff, for a number of reasons. The primary
reason is that you can't truly communicate them to others---after
all, your brain may not work the same as theirs. As Wittgenstein
said, Of what we cannot speak thereof we must be silent.

Lee



RE: What We Can Know About the World

2005-07-27 Thread chris peck

Hi Lee;

You see Samuel Johnson as a realist?

I think I started off a naive realist, became a realist and quickly became 
confounded by the absurdity of the position. If I 'understood that there can 
be things like optical illusions', I did so honestly, they told me something 
very clear about the nature of perception which makes realism look as naive 
as naive realism.


We have strong perceptions when we dream, we dont always know we are 
dreaming. Sense data is what we are directly aware of, mental 
representations. When we are not dreaming, we are still only directly aware 
of sense data. However justifiable, the external world is an inference from 
these representations whatever they are instantiated in.  How can I on the 
one hand be told that light falls upon my retina creating an image that is 
upside down, then be told that I see things directly and as they are? It 
makes no sense. Its blind hope and is obviously wrong. The world does not 
look upside down. The very fact the image gets flipped the right way up is 
enough to demonstrate I am in the grip of a cognitive representation. No. 
Berkley is right on that score.


with regards to the question of whether Johnson refuted Berkley. I cant see 
how he did.


many regards

Chris.


From: Lee Corbin [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: EverythingList everything-list@eskimo.com
Subject: RE: What We Can Know About the World
Date: Wed, 27 Jul 2005 11:11:33 -0700

Chris writes

 Samuel Johnson did refute Berkeley.

 The main thrust of Berkley's argument is to show that sensory perception 
is

 indirect, and therefore the existence of a material cause for those
 perceptions is an unjustified inference in contravention of Occam's 
razor.
 The argument that the look, texture, smell, taste and sound of an object 
are
 apprehended indirectly is successful in my opinion, and I don't feel any 
need

 to defend it unless someone really thinks a defence is required.

Do *you* contend that the existence of material causes for your
perceptions is unjustified?  Good grief.

As for your other statement, these senses are indeed, just as you
say, apprehended indirectly. (That's the difference between realists
and naive realists, e.g., children.) Of course there is no need for
you to defend that, because no one here would disagree.

 Afterall, on any view there is a translation of 'signals' of many
 different forms (light waves, sound waves) , into various 'signals'
 of the same form (neurons firing) which become synaesthetically
 unified into a whole, such that we associate the smell, taste,
 colour and texture of say an orange, as being qualities of the
 same object.

Of course.

 ...Berkley's move here is to insist that it we have enough
 information now to create the appearance of a 3 dimensional
 world out of elements that are not intrinsically extended.

I'm not sure what you mean. By elements already in the brain?
Yes, that's true. But they got into the brain by the aforementioned
processes, as you know. Don't lose sight of the fact that almost
all the information came from outside.

 By Occam then, we should not infer something for which there is no
 requirement - however firmly that inference has been imbedded in us.
 We should stick to using what we can know directly. Perception.

You don't know all this complicated crap (neurons, perception,
inference, the whole nine yards) nearly as well as you know
the monitor in front of you.  The problem is the word know.

The first things you knew consciously, and knew well, were things
outside your skin: your mother and father, and tables and chairs.
Let's resist the temptation to begin using words in other ways.

Much, much later you ceased being a naive realist and became a
realist. You understood that there can be things like optical
illusions, and altered states of consciousness. You even understood
that your own exalted consciousness is not anything to be utterly
depended upon, because one can be sick or crazy. (If it hasn't
happened to you yet, then just stay around a few more decades.)

Build carefully upon what is simple and knowable, and keep the
wild theories to a minimum.  Even then, the world is hardly
simple, but at least we've got a chance.

 In other words, dualists and materialists contravene Occam, not
 idealists. I don't see how Johnson refuted that.

Materialists do not contravene Occam. The simplest explanation is
that there is a world out there and that our brains are survival
machines designed by evolution to thrive in it. The phantasms that
occasionally infest our awareness and consciousness causally arise
as side-effects of how our brains work, that's all.

The simplest explanation does *not* start with perceptions and
all the rest of that stuff, for a number of reasons. The primary
reason is that you can't truly communicate them to others---after
all, your brain may not work the same as theirs. As Wittgenstein
said, Of what we cannot speak thereof we must be silent.

Lee