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Comment by naasking | Hacker News Reader

> in the latter cases we were trying to explain something external that we thought we were observing, whereas with subjective experience we are discussing a phenomenon that we (or at least some of us) directly, infallibly observe.

There's no distinction. When I see what looks like a broken pencil sitting in a glass of water, I am observing exactly what I describe. The reason the pencil looks broken is not because I should grant water some magical powers to break and reconstitute pencils, but turned out to be refracted light.

Analogously, I can observe that I do have subjective experience, but why should I assume that the reason I have subjective experience is different than all other observables? Why would it be some irreducible, unobservable quality?

You seem to be claiming that the existence of subjective experience is reason enough alone, and I don't see how that follows.

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> The question is whether we have justification to believe that it actually exists

I understood this to mean that you were doubting whether subjective experience actually exists, and I responded by arguing that it is not possible to doubt that your own subjective experience exists since you (I, at least) experience it directly, which is different than the class of now-refuted inferences that you were comparing it to in. I was not making any argument about where it comes from or what causes it.

To say that consciousness does not "actually exist" is the same kind of statement as saying that a car does not really exist. Certainly I drive something I call a car to work every morning. I have direct experience of this too. And yet, cars don't really exist at fundamental levels of reality, they are merely aggregates of more fundamental types of matter.

And so it is with consciousness. We certainly have consciousness, but to then immediately assign consciousness special ontological status distinct from matter, ie. dualism at worst or panpsychism at best, is a huge leap that requires justification.

Ok, I more or less agree with you here. A car is not a fundamental object, it's composed of many layers of constituent objects which eventually resolve down to fundamental particles and forces. And if physicalism is true, then consciousness also is not fundamental, but ultimately resolves down to fundamental particles and forces also.

I don't know whether physicalism is true. It certainly seems like the best overall account of the universe that we currently have, but if there is a chink in physicalism's armor, consciousness might be it. Might. But, you're right, there's a huge leap between "might" and "is".

>why should I assume that the reason I have subjective experience is different than all other observables?

We're not talking about the reason, we're talking about the experience itself. Maybe that experience occurs as the result of physical processes, but it's still a separate thing.

Arguing that qualia don't exist because you can't observe them externally is like a blind person arguing that I can't possibly see a broken pencil because they can feel the pencil is solid.

> Arguing that qualia don't exist because you can't observe them externally is like a blind person arguing that I can't possibly see a broken pencil because they can feel the pencil is solid.

This is what makes me wonder whether some of us are, in fact, p-zombies: only a blind person, someone who doesn't have visual experiences, could argue that visual experience doesn't exist, and similarly it seems that only someone who doesn't have subjective experience could argue that it doesn't exist. And there do appear to be people arguing that subjective experience doesn't exist. Either I'm misunderstanding them, I'm failing to see the third way, or some of us are indeed p-zombies.

> Maybe that experience occurs as the result of physical processes, but it's still a separate thing.

To say something doesn't really exist is to say that it doesn't have metaphysical status on par with matter. If you say that consciousness really, fundamentally exists, then you're saying that it has the same status in reality as the fundamental particles of physics. We should expect to find some consciousness field and particles upon which it acts; or you would have to posit something like panpsychism which suggests that consciousness is an intrinsic property of all matter.

Consciousness not really existing implies that it's an illusion, in the same way that cars, and jobs and countries are an illusion. Certainly they "exist" in some colloquial sense, but they don't exist in a fundamental metaphysical sense.

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