JK,
Something or someone has to make the value judgement that this sight is beautiful.
Actually lots of “someones” – which in part at least is why we see such diversity of opinions on the matter. There also though seems to be a common intuitive sense of the beautiful – hence pretty much everyone liking the way sunsets look.
All you are seeing on that scan are electric chemical signals. These don't say that, as you get these signals throughout the brain, they are ubiquitous and so meaningless. As I explained with the curtains blowing in the wind. It is like pondering a painting by looking at the individual drops of paint.
But those “signals” tell us what happens in brains when someone experiences “beautiful”. Your analogy fails because, well, it’s not analogous. The full experience of “beauty” can be mapped (at least in principle), and presumably can be created artificially too given the right stimuli. So what?
As for your second paragraph, this is pretty much besides the point. But, however, how does the brain take a subjective viewpoint? All it is is a mass of electrical chemical reactions.
No, it
is the point. And you’re attempting an argument from incredulity here but, nonetheless, what make you think that this “mass” of electro-chemical signals is insufficient to create a subjective experience?
You seem to be edging toward a Cartesian mind/body separation here.