Some stuff from the thread
Nothing to do with Dennett's , and referring to
Quining Qualia
Intuition pump #1: watching you eat cauliflower.
There is a way this cauliflower tastes to you right now. Well, no. the taste changes even as you eat it, even as the texture changes as you chew.
Intuition pump #2: the wine-tasting machine.
As a tool for convincing those who disagree, this strikes me as singularly useless. Dennett will say there is nothing missing from the machine description; advocates of qualia will say that there is...
Except that they cannot say what it is that is missing; qualia are after all ineffable. But this never stops their advocates from talking about them...
Intuition pump #3: the inverted spectrum.
Undergrad speculation.
Intuition pump #4: the Brainstorm machine. Qualia gain no traction here, either.
Intuition pump #5: the neurosurgical prank. Back to Wittgenstein: how could you tell that your qualia had been inverted, so that what was once blue is now red, as opposed to say, your memory had changed, so what you always saw as red you now recall, erroneously, previously seeing as blue? Intuition pump #6: alternative neurosurgery
Intuition pump #7: Chase and Sanborn. They have the same decreased liking for the coffee they taste; but is it the coffee that is faulty, or is it the capacity to taste that has changes? The difference between this example and 4-6 is the removal of memory as a participant.
Whence the boundary of the white triangle? In the perception or in the judgement?
Hence, intuition pump #8: the gradual post-operative recovery; is the recovery in the quality of the qualia or in the judgement that ensues? And if you cannot tell, then what is the point of introducing qualia?
Intuition pump #9: the experienced beer drinker. This is similar to 7 & 8 in playing on the supposed difference between the qualia and the judgement of that qualia. What is added is a seeming rejection of a spit between the taste of the beer and the appreciation of the beer...
Intuition pump #10: the world-wide eugenics experiment. How to make sense of the qualia of secondary properties... Someone who says phenol-thio-urea is tasteless is not wrong.
Intuition pump #11: the cauliflower cure. The cauliflower tastes exactly the same, but is now delicious...
Intuition pump #12: visual field inversion created by wearing inverting spectacles. The point here seems to be that even if there were qualia, they need not count as intrinsic to consciousness. Needs more consideration.
Intuition pump #13: the osprey cry. There's danger here of following Kripke rather than Wittgenstein. However the point must stand, that recognising the rule one is following consists at least in part in being able to carry on with the rule; but nothing in a single instance allows for this. Hence, if a qual (singular of qualia) cannot by its very nature recur, there can be no grounds for claiming that some rule has been followed; if that be so, there can be no basis for differentiating a qual; hence, no qual and no qualia.
intuition pump #14: the Jello box. This seems to be about the information content of the notion of qualia; if I've understood it aright, one side of the Jello box are the ineffable qualia, the side other, corresponding exactly, the effable, public content of our everyday discourse. But if the content are identical, what is pointed at by the notion of the qualia of say the taste of coffee that is not also pointed at by the usual conversation about the taste of coffee? What additional information is to be found in qualia?
And intuition pump #15: the guitar string. Arguably we have here three qualia; the first open E, the harmonic, and the second open E. Is the point here that as the ineffable becomes the subject of discussion, the qualia is less ineffable...?
Here's my question for those who would have us talk of qualia: what is added to the conversation by their introduction? If a qual is the taste of milk here, now, why not just talk of the taste of milk here, now?
The pretence that Qualia are a given is misguided.