Ok. Organ function, the mind being the brain doing its thing, is the low hanging fruit here. Nevertheless, it's the most sensible/reasonable way to look at mind, physically speaking that is.
Let's do a comparison between the kidneys and the brain.
With kidneys, there's hardly anything controversial regarding the physicality of urine formation: we understand the physiology, the biochemistry of each and every molecule in our pee, quantitatively to boot.
With the mind, however, I haven't heard of any measurements done on thoughts: how much does a thought weigh? what is the concentration of a thought? Quantitave analysis of thinking seems impossible as the conceptual framework thereof is N/A.
Indeed, that we're lacking a go-between between the physical brain and the (apparently) nonphysical mind is the nub of the issue.
Thanks for lesson on the history of science, but I'm sure you know that the germ theory of disease is heavily reliant on microscopic evidence. Even if microscopes predated the theory in question, it's clear that micrsocopes were the X factor.
An
emergent property, yes. The need for an additional idea/concept to connect the brain to the mind is what I find deeply intriguing. It bespeaks an admission by physicalists that there's something missing/incomplete in re a physical explanation for the mind.
Mind as the funtion of a (physical) brain just won't do. As I related to
Cuthbert, wecan't neasure thoughts like we can, for instance,
bilirubin, a product of the liver.
Interesting. However, it fails to satisfy me in the most basic sense - localization of brain function is not an explanation of how physical processes lead to thoughts. To illustrate, I know, very roughly, where the features in my smartphone are located, but the truth is I don't know how they actually work.
The mind is just the body, yep, that's what a physicalist would say, but dig a little deeper and such claims tend to fall apart. See my replies to
Cuthbert and
Tom Storm (vide supra).
Mind as an
external force! Sounds interesting. I wonder if some conservation laws are violated if this were so.
What bothers me is that physicalists find it necessary to invent new concepts e.g. emergentism to bridge what then has to be a gap between the physical brain and the mind. The question is, is there any difference between emergentism and nonphysicalism?