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prase comments on Open Thread: February 2010, part 2 - Less Wrong
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I don't understand your explanation. You are apparently saying that quale (you seem to deliberately misspell the word, why?) is how the algorithm feels from inside. Well, I agree, but in the same time I think that "quale" is only a philosopher's noble word for "feel from inside". The explanation looks like a truism.
I have always been (and still am) confused by questions like: How other people perceive colors? Do they feel it the same way as I do? Are there people who see the colors inverted, having the equivalent of my feeling of "redness" when they look at green objects? They will call that feeling "greenness", of course, but can their redness be my greenness and vice versa? What about colorblind people? If I lost the ability to recognise blue from green, would I feel blueness or greenness when looking at those colors? What does it in fact mean, to compare feelings of different people? Or even, how does it feel to be a dog? A fish? A snail?
I am almost sure that the questions themselves are confused, without clear meaning, and can be explained away as such, but still I find them appealing in some strange way.
I always wanted to make an experiment on myself, but I am also afraid of it and don't have an opportunity. I would buy glasses which invert colors like on a photographic negative and wear them without interruption for some time. Certainly in the beginning I would feel redness when looking at trees, but it can be that I would accomodate and start feeling greenness instead. Or not. Certainly, it would be a valuable experinence. Has anybody tried something similar?
I once heard of people at UCSD who had plans to experiment with inverted spectrum goggles. Jonathan Cohen would know more.
Thanks, seems interesting.
Would this be possible optically? The only way I can see it working is using a live video feed with some image processing to invert colours. That is probably quite practical using modern technology though.
Interesting experiment. It reminds me of an experiment where subjects wore glasses that turned world upside down (really, right side up for the projection on our eye) and eventually they adjusted so the world looked upside down when taking off the glasses.
What do you think a "yes" or "no" in your experiment would mean?
Note, Dennett says in Quining Qualia :
I know about the experiment you mention, and it partly motivated my suggestion; I just subjectively find "yellowness" and "blueness" more qualious than "upness" or "leftness".
In my experiment, "yes" would mean that there would be no dissonance between memories and perceptions, that I would just not feel that the trees are red or purple, but green, and find the world "normal". That I would, one day, cease to feel the need to get rid of the color-changing glasses, and my aesthetic preferences would remain the same as they were in the pre-glasses period. I think it's likely - based on the other subjects' experiences with upside-down glasses - that it would happen after a while, but the experience itself may be more interesting than the sole yes/no result, because it is undescribable. That's one problem with qualia: they are outside the realm of things which can be described. Describing qualia is like describing flavour of an unknown exotic fruit: no matter how much you try, other people wouldn't understand until they degust it themselves.