Zeuzzz
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- Dec 26, 2007
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Real world to academic world, are you receiving?
Over.
I wouldn't put much stock in that particular definition for our purposes here.
First of all because we know that perception and consciousness are not the same thing, a fact which MW does not take into account.
Also, the major point in my post about hallucination is that you are hallucinating all the time.
A doctor performing surgery is hallucinating. A gymnast delivering a perfect-10 performance is hallucinating. An orchestra performing Mozart is hallucinating.
These hallucinations are a mixture of perception and dreams.
You actually perceive a small fraction of what you experience. The brain patches up the rest in a process that's pretty much the same as dreaming, but without the bodily side-effects such as paralysis.
On the other side of the coin, you do quite a bit of perceiving which simply never gets involved at all in the brain functions that produce conscious experience.
The hallucination model has several advantages, not the least of which is that it conforms with current observation and experiment (unlike the alleged computational model of consciousness, which, truth be told, doesn't even exist). It also finally gets rid of the Cartesian theater for good, which is no small feat.
The computationalists will often speak of "representations" in the brain, and physicalists do as well... it's a very useful way of talking about what's going on in the brain. But the computationalists make the mistake of entifying the representations, treating them as real things rather than convenient ways of talking about incredibly complex phenomena.
I'll give you an example of what I mean....
Suppose you drop a stone in a lake. It causes ripples. These ripples are not "represenations" of the stone... they are merely consequences of the stone hitting the water. They don't resemble the stone at all. (And even if they did, their similarity could not actually be a "representation" of the stone without an observing mind to note the similarity and decide that they were representations.)
So even though different stones will produce different patterns, and even though these patterns may be entirely predictable, there's still no objective "representation" going on.
Now suppose that this particular lake has some sort of film on it, maybe pollution, maybe pond scum, whatever. And the ripples in the pond cause patterns of this film to be left behind on the lake bank when the ripples cease.
Those patterns on the bank are not representations of the ripples, much less of the stone!
And yet the computationalists want to say that they are... or they would say so, if they were consistent in their logic.
The patterns of neural firing that go on in your brain when light bounces off a tree and onto your eyeballs are not representations of the tree. They are in no way similar to the tree. They don't resemble it at all.
And here's the kicker... the hallucination resulting from the patterns of neural firings also does not resemble either the neural firings or the tree!
Your gut instinct is probably to think, "Wait, no, of course my vision of the tree resembles the tree... if it didn't, I couldn't do things like climb the tree".
But as we saw in the earlier thought experiment about the drug, the fire, and the poison, this is actually not true at all.
All that matters is that the hallucination enables your body to interact effectively with the tree. Representation is not necessary.
And absolutely nothing that's in your conscious experience of the tree is present in the tree itself -- nothing at all. Not the color, the smell, the sound of wind in the leaves or the branches rubbing together, the feeling of the texture of the bark or its coolness to your hand, the pain you get if a twig sticks into your side... absolutely none of that exists anywhere except your conscious experience.
The light bouncing off the tree is like the stone dropped into the pond. The neural firings are like the ripples in the pond. The hallucination your body performs is like the patterns of algae on the bank.
They are part of a causal chain, but no part resembles any other part, no part is a representation of any other part.
Once you kick this notion of representation to the curb, your understanding of what's really and objectively occuring gets much clearer... and the computationalist model unravels even further.
I could go on
but that should suffice to demonstrate that Pixy's claim is false.
If, on the other hand, you are referring to his claim that it is widely accepted that "the brain is a computer", then there's nothing I can do for you because I can't cite what doesn't exist -- it's like asking me to provide citations to prove that it is not widely accepted that horses eat rabbits, because nobody writing about horses bothers to point out that they don't eat rabbits.
Also, the major point in my post about hallucination is that you are hallucinating all the time.
Okay, I'll bite. How is the brain _not_ like a computer ?
I started in on a lengthier response a couple of times, but there's nothing in Piggy's post that isn't complete nonsense. There's no clear point to start in correcting him, because the that post is based on multiple layers of false premises that he's already been corrected on repeatedly.
Come on, Pixy. Even I am getting tired of that.
Libertarian free will is an incoherent concept; compatibilist free will is demonstrated by computers all the time.Free will
Same thing, and some computer programs clearly demonstrate this behaviour.Self awareness
Consciousness
Yes, but is there any reason to think that's relevant?Different biochemical interactions
Neural networks.Different topology
Where did you get that number from? My (admittedly back-of-the-envelope) calculations put it in the range of 10 to 100 megawatts. Which is a still a million times more than the brain, but a million times less than your numberA human brain uses 10 Watts of power, where most computers we have made to try to get to the same level of information processing and memory storage need over 20 terawatts.
Apart from the fact that they're both computers.Different ... well different in every regard really apart from. Um. Um.
Yes. It's one thing to take a concept that isn't well-defined, provide a definition, and to debate the value of that definition, but to take a well-defined scientific term and thrash it into meaninglessness is not going to be terribly productive.Um, I respect you and all but, no.
Hallucinations are false perceptions that are not related to sensation.
You can butcher meaning all you want but you could make your point more carefully and use the language that exists.
In the same way I don't have a problem with free will. They are both used either as flags of dualist irrationality, or as convenient and careless abstractions that paper over ignorance of underlying mechanisms & processes.
The existence of sensation isn't negated by that statement, but reinforced - sensations are changing mental states which are changing physical states. In terms of the active brain, talk of mental states is just relabeling physical states.
Do you really think there's no you? who is it that thinks that if not you? Being you doesn't necessitate a Cartesian theatre, you just need to accept that your brain activity is you.
There are only physical states. The only mapping involved is between physical states, involving wetware 'processing'.
I have no idea what you mean; what circuitry? what rule?
Why introduce an unevidenced additional entity (especially a 'sensation field') when there is no reason to suppose it is necessary?
Be nice! We're all in this together.
And that is why it, the scientific model is so effective at doing things, it is about behaviors, not about meaning.
Self-referential computation.Read Piggy's thought experiment and show how it can be explained in terms of physical states.
Nope. Although we politely ignore the shibboleth "phenomenal".You are missing the concept of phenomenal consciousness.
It's zero.Did you not look at the video I put up? The evidence for CEMI is now stronger than it was in 2002.
This doesn't happen. Let me say that again: This. Does. Not. Happen.If EM fields trapped inside a Faraday cage that cause EM field waves to bounce around is what consciousness is physically, then there should be rules, psycho-physical rules as to how an EM field causes various sensations to occur.
That doesn't actually mean anything.I take the following as ontological parts of a future consciousness model:
1. There is sensation that forms consciousness.
Nope. This is patently false, because they are interchangeable.2. There exist two ontological states of existence in physics:
a. Matter (Fermions)
b. Energy (Bosons)
Could you possibly be more vague? Everything in the Universe is assocated with bosons, because everything in the Universe is associated by bosons.There exists no a priori reason to expect that consciousness can not be associated with 2.b.
Um, I respect you and all but, no.
Hallucinations are false perceptions that are not related to sensation.
You can butcher meaning all you want but you could make your point more carefully and use the language that exists.
We do not hallucinate in that sense all the time, I think you are trying to say that we do not have direct sensation. But constructs called perceptions.
Either way, have a good ten days, I will be absent.
Same to all!
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It's zero.
So you chose (hallucinated) not to read it. OK. Thanks for sharing.Why should I read the post of someone who is hallucinating?
Optical illusions are a good demonstration of hallucination. Our brains fill in a lot of blanks in what we are perceiving. We assemble our conscious impressions from an incomplete data-base.
I started in on a lengthier response a couple of times, but there's nothing in Piggy's post that isn't complete nonsense. There's no clear point to start in correcting him, because the that post is based on multiple layers of false premises that he's already been corrected on repeatedly.