Atlas said:
This notion of qualia still escapes me.
If this is truly so, and other people are wondering whether they exist, then it must be me who cannot be understanding what they are. I thought it was just raw experiences; especially those from the 5 senses. They simply replace sense data because of the duality that implies i.e in looking at a horse, there is a real physical horse and
in addition there is an image of a horse which only exists in your mind. Qualia just tries to eliminate this apparent absurdity.
{shrugs}
But, as I say, given that people keep saying they probably do not exist, and they are mysterious, then one of us is not understanding what they are. I'm willing to concede that it might well be me. So what am I not understanding? I mean you surely cannot be denying that people experience greenness??
For me, a thought experience is made of thought (and emotion). Qualia seems to be more a distraction. They cannot be proved, disproved or studied. They can be defined and conjectured on. So can soul.
I don't understand how they can be defined. This is the whole purpose of the knowledge argument isn't it? You know, the one about Mary, the brilliant scientist who knows everything there is possible to know about color, but who has lived in a room with only black and white things in it (and shades in between) all her life. The one day she goes outside and gets to know what the experience of seeing green is actually
like. Thus it is clear that only the experience of greenness can convey what it is like. Thus no definition is possible.
They do seem like soul in that they are ineffable and immaterial.
Quick correction; not the soul, but self. Or
substantial self if you like.
They are just the apprehended rather than the apprehender. They seem a perfect conjecture for an already assumed conclusion.
Regarding the the real world light reflection of redness, there is no doubt that it is apprehended. Do we need to postulate an intermediate state of redness that is the qualia of it or is it more prosperous to continue exploring the mechanism of the senses. These pay huge dividends. We can fix some defective apprehensions with corrective lenses or surgeries. Qualia hold no such promise. They offer the same value as "soul". Something supernatural that can be talked about, perhaps felt, but as private as thought and manipulated physically with drugs like LSD.
And that goes to the heart of my problem with qualia. They cannot affect the physical world
Does the experience of a glorious sunset over an ocean really not effect you? Is it not the characteristic feel conveyed by your raw experience which is effecting you?
but with LSD even redness is more than redness. So there does not seem to be a qualia of redness that is objective and the same. It seems as though a drug like LSD has an affect on the organism that modifies the apprehension mechanism. Either that or LSD modifies the qualia being apprehended. Which is more likely? [/B]
LSD effects the brain. Both the brain and self as well as external reality all have roles in determining the characteristics of our qualia.