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DanArmak comments on Dennett's "Consciousness Explained": Prelude - Less Wrong
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Consciousness is (purportedly) the property of being able to perceive anything (not just itself). The property of having subjective experience. Most people claim to have such themselves, and that opens the question of what this property actually is and what other things may have it. Which is indeed a "big and strange" question, if you define this property as being extra-phenomenal - which is inherent in most discussions of subjective experience.
To deny consciousness as a problem, you need to deny the existence of your own subjective experience. Not just your objectively existing self-reporting of it, but the actual subjective experience that you feel and that I can't even in principle check if you feel.
On the other hand, this consciousness must be logically necessary (otherwise we get p-zombies) and cannot causally influence the objective universe (otherwise we get dualism and our physical theories are all wrong).
Re: "Consciousness is (purportedly) the property of being able to perceive anything (not just itself)."
Sleepwalkers perceive things (they must to be able to walk and balance). However, they are not conscious. Also, there is "Unconscious Perception".
...and we already have a word for perception. It's "perception".
So: consciousness is best not being defined that way.
How do you know? Maybe they (and dreamers) are conscious, to a degree, they just don't form memories.
And don't forget lucid dreamers can remember and carry out actions with their eyes.
A good point. That certainly looks like a central component of consciousness (whatever that is) that's absent from sleepwalking.
Re: "To deny consciousness as a problem, you need to deny the existence of your own subjective experience."
That just sounds like nonsense to me :-(
Perhaps you are a zombie.
This is not the first time that the qualiaphiles have used that put-down on me.
Keeping in mind that I'm explaining a view with which I don't fully agree (but I don't hold to an alternative view either, I just don't fully understand the matter) - I'll try to reformulate.
We have subjective experience. It does not seem to be describe-able in ordinary physical terms, or to arise from theories of the physical world, because these theories don't have any place for "experience" or "feeling" as seen from the inside - only as seen from the outside.
What the experience is about, the events and information we experience, is part of the physical world. Aboutness is fully explained as part of the physical world. What's not explained is why we feel at all. Why does an algorithm feel like something from the inside? Why does it have an "inside"?
I have feelings, experiences, etc. The question being asked isn't even why I have them. It's more like, what are they? What ontological kind do they have?
Re: "We have subjective experience. It does not seem to be describe-able in ordinary physical terms"
...but it must be - everything in the universe is.
Re: "or to arise from theories of the physical world, because these theories don't have any place for "experience" or "feeling" as seen from the inside"
So what? They don't have the notion of "fractal drainage patterns" or "screw dislocations" either. Complex systems have emergent properties, not obviously related to physical laws - but still ultimately the product of those laws.
Feelings are patterns - and like all patterns, are made of information.
Is that an observed fact, or a definition of "everything in the universe"?
If a fact, a rule that has held so far, then (some people claim that) consciousness is an observation that contradicts this rule.
If a definition, then perhaps consciousness can also be said to be "in" the universe, but that doesn't help us understand it...
Anyway, I don't think I have any more to contribute to this discussion. I fully understand your position. I think I also understand the position of at least some people who claim that consciousness is a real, but extra-physical, thing to be explained (like MItchell_Porter?). So I've tried to explain the latter viewpoint.
But I ended up going in circles because this idea rests on everyone agreeing that their subjective experiences indicate that such a "extra-physical consciousness" exists, and the moment someone doesn't accept this premise - like you - the discussion is pretty much over.
I'm ambivalent myself: I can understand what the "pro-consciousness" people mean, and I might accept their claims if they could answer all the resulting questions, which they don't. So I see a possible unresolved problem. On the other hand, it's likely that if I hadn't encountered this idea of consciousness I would never have come up with it myself, all talk of "immediate subjective knowledge" nonwithstanding. That's why I'm not sure there is a problem.
Re: "If a fact, a rule that has held so far, then (some people claim that) consciousness is an observation that contradicts this rule."
Right - but those people have no convincing evidence. If there was some mysterious meta-physical do-dah out there, we should expect to see some evidence. Until there is evidence, the hypothesis is not favoured by Occam's razor.
The advocates can look for evidence, and the sceptics can think they are crazy - but until some actual evidence is found, there's not much for people like me to discuss. The hypothesis is about as near to dead as it can get.
As I said: the hypothesis relies entirely on everyone agreeing that they, too, sense this mysterious thing inside them (or identical with them, or whatever).
Until new evidence or argument is brought forward, I'll continue treating it as a cultural mental artifact. But I do feel somewhat sympathetic towards attempts at creating such new arguments without using new evidence.
Why would a subjective experience cause people to think they know more about physics than physicists do? Subjective experiences are an especially poor quality form of evidence.
Subjective experience is immediate. You can't ignore or deny its existence (although you may think there's nothing unexplained or mysterious about it).
When people consider that physics doesn't explain their subjective experience (whether or not these people fully understand physics), they therefore feel they have no choice but to conclude that the physics, or the physical ontology, is incomplete.
In an computable universe, you can make agents experience literally anything. No amount of zen moments would add up to reasonable evidence.
What would be more convincing is that if brains demonstrably did something that violated the known laws of physics. Much like Penrose thought they did, IOW. Then we would have to poke around in search of what was going on. However, there seems to be no hint of that.
Sure you can, if you're an epiphenomenalist. (Am I right that you've been advocating that position, though you may not hold it?) A conscious being could sincerely deny experiencing consciousness. Such a being wouldn't be a normal human, though possibly a brain-damaged human. At any rate, they surely exist in mind-space. Likewise, an unconscious being could claim to experience consciousness (i.e. a p-zombie).
It would seem that heterophenomenology as ciphergoth has been advocating is incompatible with ephiphenomenalism.
I suspect that there might be some sort of personality disposition to be more or less willing to claim to experience experience, to feel the immediacy of consciousness. Something analogous to the conservative/liberal divide. If that's true, then making claims like the quoted one is just the mind projection fallacy.