How do we know whether the red you see is the red I see? How do you know that what I call "warm" is what you experience as warm?
I suppose we cannot ever tell what each other feels, or how does it feel to have a million lens like flies since we won't ever have the physique is one.
Perhaps, the problem on the human level can be easily speed through music and still art.
The reason we so desperately seek to paint what we see, is to show others what our mind's eye see, to share our inner qualia. Music, sound the same to you and I, when we play in tune and in harmony. It's the absolute pinnacle of matching you're qualia with mine, and we CAN be sure that what you hear is what I hear, yet paradoxically we can derive different interpretations of it deep within our emotions.
I don't suppose qualia can be tested, but it can definitely be shared and expressed, albeit in limited avenues.
