How?
What makes you think neuroscientists are unable to document "subjective" experiences? Were you not aware of this?
I am perfectly aware, for example, that neuroscientists have made great advances in identifying the neural correlates of subjective experience, as the latter are
verbally reported. Is this what you are talking about when you use the term 'document' in your post?
The point I was trying to make is that even though the rich content of subjective experience is clearly "real" (what could possibly be more real?) we cannot
objectively measure or assess the content of anyone's sensations since nature has locked that door for us - each person's inner world of subjective experience
simply cannot be accessed from the outside even though, of course, the neuronal activity that accompanies it
can.
To expand:
1. When light of a certain wavelength enters my eyes, I have a subjective sensation of "blueness";
2. We can
objectively determine that light of a certain wavelength correlates with my
reported experience of blueness;
3. What we cannot "objectively" determine is whether the
content of
your experience when exposed to the same wavelength of light is the
same as mine. You will, of course,
report that you see "blue" but - and this is the key - we cannot confirm in any
objective way that you are having the same experiential content as me.
4. And yet, I suggest, it is perfectly reasonable to assume your experience is the same as mine and incorporate that hypothesis into a model of the world. Now, of course, that model is therefore not falsifiable in respect to that particular hypothesis. But that surely does not mean I cannot legitimately advance and believe in such an hypothesis.
Please, please do not
assume that I don't know what I am talking about. Perhaps I am mistaken but some of the objections I am reading suggest you (and others) think you are talking with someone who needs to be educated about the nature of science, the nature of scientific models, the features of a "good" model of reality, etc. Perhaps I am mistaken in some respects, but it really does appear that some of you are assuming I know almost nothing about these issues. Perhaps this is understandable given the other stuff one reads in this forum.