Captain Blackout said:
1) I didn't say sensory information wasn't 1's and 0's. I said they weren't just 1's and 0's.
But why not? 1s and 0s include all the information we ever need, the question is how to read that information. And that's where the differences in people's brains come into it again. At least that's what I think.
4) While I easily admit we are physical beings I'm making the case that we aren't just physical beings. To refer to point 3), you say that qualia have physical correlates. Of course they do! They are our experience of the physical universe.
But that's where I disagree. Even the qualia itself, the "subjective impression" if you will, is physical because our brain and indeed the consciousness it produces are also physical in nature. Electric activity, chemical transmitters, receptors, computing and forming a mind as well as its subjective impressions of something.
If you want to show that qualia are physical in and of themselves you need to be able to isolate them from being having them, even if only in a mathematical description.
True, but we
can make objective statements about how a thing is in the world thanks to our technology. So we can establish what a thing is, at least when our machine is reliable. The qualia itself is not quantifiable because we lack all the information necessary to take the objective thing and apply differences in bodily functions (such as differnt retinas, nerves and visual cortex) as well as differences in experiences and memories (which further change the impression of the objective thing on an emotional level). If, however, all these influences were known and applied to the objective thing that causes the impression, we could basically come to the same conclusions this subjective mind is coming to.
This is prior to establishing the metaphysical nature of humans.
Not a thing I can say anything about because I don't know much of or really believe in the metaphysical.
Furthermore, if you were right, how would we have completely new experiences? Not just events but the actual apprehension of those events into experiences.
Oh, much of it (especially when it comes to visual input, which is what we're mostly going on about here) is preprogrammed. Of course, society advances us further and we can learn to see more and more difficult or different things. However, the basics are already there.
A child can recognize faces and simple geometrical shapes pretty much right from the start. It's even more obvious in animals (because, to be honest, human babies are pretty slow in their development, at least at first). I daresay that these preprogrammed basics are the templates for the things we learn, they are what we compare everything we encounter to during the first months of our lives.
That qualia do exist, that they can be captured in some language, and that we can even predict them.
Yes, maybe it's bold, but I'm pretty sure it's possible if we had the necessary data. Do you know of biofeedback? fMRIs? Neuroscience is getting to the point where we can recognize not only emotional states but even certain (albeit strong) memory-reactions from the pattern of O2-distribution in the brain. I even partook in one of those experiments, it was fascinating.
We see a limited spectrum. The six basic colors (the primary and secondary colors) loop back, as if no more could exist outside of the known spectrum. I have to wonder if this is the case.
Well, I guess it comes down to whether you trust in our technology or not. I think it's pretty clear that light outside our visible spectrum exists not only because of ultraviolet/infrared but because of alpha/beta/gamma rays and the obvious effects they are having. We cannot perceive them but we can tell from the results that they obviously exist and we can classify them as electromagnetical rays by looking at their various behaviour.
And that's similar to what I'm trying to say here: Yes, I will never be able to really
see what another person may see, but it may be possible to come to conclusions about it based on the data we gather.
I also think after reading "The Colour from Outer Space" such an experience might be devastating to a human.
Don't know of this book. Can you give me the basic jist?
Also we have a new question: Do colors look the same to other species?
Well, bees can see ultraviolet. We know that based on their behaviour concerning ultraviolet colours in blooms. As for the ones in our visible spectrum? I don't know, I don't have enough information on them.
Considering many humans seem to have a very different subjective perception of objective things, I guess it's fair to assume other species will be different from us as well (and different intraspecies, too). However, since some animals are closer to us than others (you mentioned dogs and gorilla versus spiders), I'd say we can (for now) predict a larger similarity to those closer to us.
I don't have any information on this, but depending on how a spider's eyes work (similarity in the receptors' structure, pigment, innervation and so on), we could possibly make a prediction about those as well.
However, we know even less about those animals' minds than we currently know about the human mind. Some people even doubt lesser animals like bees have such a thing as a consciousness and assume all its behaviour is driven strictly by instinct and genetically preprogrammed behavioural patterns. I'm not sure on this myself, but I believe it's fair to assume there's no "break" between conscious and non-conscious animals but rather a steady decline of instinct and increase of consciousness the more complex an animal is.
What I'm getting at here is that while we may currently have enough data on their eyes and other bodily aspects (nerve system and so on), we don't know in how far consciousness, experiences and memories come into it.
There's no magic needed to show that qualia can not be expressed linguistically, symbolically, or mathematically. Just try doing it. The only way we can communicate qualia is in reference to other qualia.
I don't doubt that I can never experience the same qualia the same way you would, but I say we can quantify it, objectify it through the use of technology to create a working model to (albeit incompletely) fill the gap. As I said in a post before, there are many things we can't perceive at all but can draw conclusions on based on effects, results and behaviour.
6) You completely avoided my question: If we can not express qualia in mathematical (and therefore physical terms) what terms do we use? Without those terms physicalism has a big gaping hole and atheism is only faith based or in need of new support. I'm not even arguing against atheism, only showing that it's no more valid than theism in the end.
I'm not sure what you mean by this. Do you mean in everyday life or science?
For everyday life, yes, we rely on other qualias.
But in science we
can measure the results of the impressions a person gets when seeing an objective thing. We can. A person might, for example, start to sweat. His pupils might dilate. The hippocampus might flare up in the fMRI, indicating a memory surfacing.
All of these admittedly aren't allowing us to experience a qualia firsthand as the person in question does.
But this data can give us hints as to how, subjectively, this person is experiencing said objective thing (a picture of a loved one, for example, or a horrible accident or people laughing or whatever).
7) Ok, so you believe we can predict qualia?
No, I said I believe we
could predict it if we had all the data.
Today's technology only allows us glimpses into the inner workings of a person's mind.
But if we ever had the ability to gather all the necessary data, not just hints at said experiences/memories/feelings,
then we could predict them.
Very well here's your task: Make one up and describe it to me completely and unambiguously without referencing other qualia. Good luck.
I know it's impossible for now so obviously I'm not going to try.
But if you have a spare fMRI, I could show you some of those hints and glimpses I mentioned to get my point across a little better.