Because, if it were a purely physical process, then intentionality would have no impact on it. In those experiments where a conscious mental activity causes changes to the brain structure, then the changes are brought about by a conscous act, not by a physical cause. If I tell you something that has physical consequences, that is different to my hitting you or giving you a physical substance. Intentionality is not a physical thing. — Wayfarer
I don't see your conclusion being rational. You're assuming that consciousness is not a physical process, therefore consciousness cannot be a physical process. The brain can communicate amongst its cells, and produce different outcomes through a physical process. You have shown nowhere where this is not the case.
I think what you might be missing is the idea of input and output, versus the processing in the brain itself. The brain changes based on internal processing, input, and output. Your sensory receivers of sight and sound are inputs. Your brain takes those inputs and molds them into something it can interpret. But sight and sound don't affect the brain directly, its the interpretation of that light and sound. The brain needs that physical light and sound to touch its physical nerves, which travel up the physical pathways to touch the physical neurons. A person can lose an input like sight or sound, but still the brain processes up there.
I'm sensing your view of neuroscience is outdated considering who you are citing. The philosophy of mind is an aside to modern day neuroscience. The idea of something apart from the physical brain is based on ignorance or superstition at this point. I'm also sensing you're focusing too much on humans. Think of a dog sitting around and scheming how to get the food off the table. A spider constructing a complex web. These are all physical beings that we attribute no extra essence to. It is the reality we live in.
I think you also misunderstand the placebo affect.
https://www.health.harvard.edu/mental-health/the-power-of-the-placebo-effect
"Placebos won't lower your cholesterol or shrink a tumor. Instead, placebos work on symptoms modulated by the brain, like the perception of pain. "Placebos may make you feel better, but they will not cure you," says Kaptchuk. "They have been shown to be most effective for conditions like pain management, stress-related insomnia, and cancer treatment side effects like fatigue and nausea."
This is often attributed to the idea that pain and fatigue are indicators that you need to rest or take care of yourself. If you can fool the brain into thinking its being taken care of, its wasteful to keep sending these signals out. But it doesn't actually cure you. This is still a physical process. "How placebos work is still not quite understood, but it involves a complex neurobiological reaction that includes everything from increases in feel-good neurotransmitters, like endorphins and dopamine, to greater activity in certain brain regions linked to moods, emotional reactions, and self-awareness."
It (Self-repair) is never observed in non-living matter. — Wayfarer
Ah, this is a simple misunderstanding between life and non-life. We're both made up of matter and energy. Life is a serious of complex chemical reactions that seeks to sustain its chemical reactions. A sun does not seek more hydrogen as it burns out. Therefore it is non-life. Anything which seeks to sustain its own reaction by seeking out a replacement for what it is burned, is called life. But its all the same matter underneath.
Go back to this post about the 'neural binding problem'. — Wayfarer
There is a paragraph in the first Chalmer's paper you linked me. "A nonreductive theory of consciousness will consist in a number of psychophysical principles, principles connecting the properties of physical processes to the properties of experience. We can think of these principles as encapsulating the way in which experience arises from the physical. Ultimately, these principles should tell us what sort of physical systems will have associated experiences, and for the systems that do, they should tell us what sort of physical properties are relevant to the emergence of experience, and just what sort of experience we should expect any given physical system to yield. This is a tall order, but there is no reason why we should not get started."
Even Chalmers is not claiming that consciousness is not separate from the physical. He understands that consciousness rises out of physical processes.
The Neural binding problem is only mentioning that we have not found the process by which the brain takes all of the visual information for example, and processes it into what we "see". It is merely noting that it is difficult to do so, and is in its infancy. The neural binding problem is not a claim there was an alternative to consciousness coming from the brain. It is merely identifying the difficulties of figuring out the exact process, and the challenges that it entails.
Everything points to consciousness being the physical process of the brain. We're trying to figure out exactly how that works right now, but there are no theories in science which are studying the consciousness as if it is somehow separate and not formed from the brain. Feel free to show me some if you know of them.
The rest of your statements are just a lack of understanding. Neuroplasticity is a very physical action that has limits on what it can do. Laws are a recognition of reality, and logic is a fundamental understanding of reality. 3 is greater than 2 because my brain can process the language of the numbers, represent the objects, and understands how to compare. Even a dog can observe the concept of greater and lesser.
Just because you don't understand neuronal activity, does not mean that it does not produce the things we all experience in reality. I do not understand your viewpoint. Concepts are physical results of your brain, within the brain itself. Maybe a comparison can help. Basic computer code is 1's and 0's. We can limit the expression of these 1's and 0's to 8 bits, and read the order of those 8 bits to represent different things. The computer represents its internal processing reality to these bits. It takes a TV to display those bits into something we understand. Will we ever understand the personal experience of a computer that is programmed to monitor itself? No, that experience can only be done with 1's and 0's, which we don't process in. But we do know those 1's and 0's build the computer program we are using and seeing. There is nothing magical or fantastical going on, its all just a physical process.