Is it a problem that we don't know if the world induces the same subjective data in each of us? Is that unverifiable? What we know for sure is that "red" plays a part in social interaction. — frank
It could be a problem is you choose to take it as a problem. We usually don't. If someone is in pain, say we can see a person is missing a finger or they got hit by a car, we take it to be serious and reason that if the same thing happened to us, we would react in the same manner.
Sure, we can't know for certain (anything in the empirical world) if my red is your blue. But strangely, this issue is rarely (if ever) brought up in regard to sound. If I hear someone sing a song I like, no matter how out of tune it may be, then I will be reminded of the song and think to myself ah yes that's Led Zeppelin or whatever.
So, we assume they are hearing the same song as us. I don't think sound is qualitatively more important than sight so far as our senses go. That is, I don't see why color should be a problem, but then sound is not.
And yet all we have in our brains is neurons firing. Somehow that give rise to both the "subjective affects" and the "objective properties". If we see red as pure quality, and ballness as simple quantity, we are still left with the deeper fact that all that is happening in our heads is neurons firing. Just in different corners of the brain, as we can tell from the damage we can do by plunging something blunt into the "colour centre" as opposed to another spot that is the "object recogntiion centre". — apokrisis
If you push most people hard enough, I think you could get them to say that even those things which we consider "objective" cannot be proven to be so, so everything does end up being some phenomena in the mind/brain.
I think that we have to "bite the bullet" and assume that there is something out there, which is independent of us. Whatever that something may be cannot solely be a product of my mind, for if it is in every single instance a mental thing, then I see no way out but idealism, of a Berkeleyan variety.
Neurons firing, no doubt. But plenty of other things go on inside brains that aren't neurons alone, which probably play a deep role in how our minds work.
The idealists will complain that this leaves consciousness under-explained. The realist will dismiss it as instead an irrelevent complexification to them.
But because both camps agree that science should stay out of philosophy, at least they can agree on that.
Meanwhile, the science rolls on at a good lick. Sharpening our understanding of how things are. — apokrisis
They can say that, but I'm not sure it makes much sense. One can do science without an explicit philosophy and one can do philosophy without an explicit science. But to say that because one should only stick to one or the other seems arbitrary and pointless to me.
It is forgotten that say, for Plato and Aristotle there was no distinction between science and philosophy. Nor was there one for Descartes, Hume or Kant.
It's after Kant that such distinction begins to be made explicit. However, I don't think "science alone" suffices for every or even most questions we have. It may have the best supported and reliable data set and theory but leaves plenty out too.