Nice answer. Let me add a few comments of my own.
zannennagara said: The mental experience, consciousness, must be immaterial in the sense that it is not wholly within the boundaries of one material or even multiple materials - "material" being restrained to physical delimitation in the form of linguistic definition. We have a definition for brain, certain physical material that is distinct from the other material (including its components) in the body with other definitions, but functionally a brain always acts in concert with many of these other materials.
Which is to say what? That we have a word for brain that signifies a particular entity? Indeed, we do. Words and written significations are the substance, or effect, of the mind in the same way oil paints are the substance of a painting. Without the mind they mean nothing as meaning is an integral part of the mind.
Quote: This is interesting because it makes our envisioning of the brain inaccurate: in operation, the way we think about it, there's no such thing as brain, but brain+blood+oxygen+neurons+electrical signals+cetera. All of these things are materials, but the process by which they interoperate (e.g. the science itself) seems immaterial, although everything it describes may be material - for the reason that our words are these materialistic delimitations.
While the brain and its functions are analytically distinct, the process of the mind cannot be reduced to matter without falling into Idealism or self-refuting nominalism. I think that's a heavy price to pay for allegiance to the materialist worldview. If I understand you, you've just said that thoughts are material because they are material. Words are significations and should not be conflated with thought. They are sound or a visual image, nothing more.
Quote: The mental experience cannot be confined to the brain for the basic reason that everything experienced is not the brain. It's disingenuous to say that all mental experience originates in the brain, as the experience has foundation in some brain-external event. The experience of listening to music surely can't originate in the brain; the sound-system must be the origin, or maybe the cones in the speakers, or maybe the designer, or the recording engineer, instruments, musicians, ad inf. These sound waves enter the ears and skin and elicit some novel neural electricity.
If we are aware of something, there must be something to be aware of. Yet, the awareness is a mental activity of the mind. Without ideas being that by which we apprehend instead of that which we apprehend we are locked into an inner world where nothing can be experienced except for the mind or a universe that is only ideas but not material. The fact that some novel neural activity obtains from some external stimuli does not negate this fact. The brain and its associated functions are a necessary condition for the mind. They cannot be a sufficient condition for the mind unless we are trapped inside our minds, i.e. solipsism, or the universe is only ideas and matter either doesn't exist or we cannot experience it.
Quote: The con- in consciousness means "with," so it can't be reduced to one factor, one organ. This I believe to be the source of the "non-thinkers'" belief in soul, eternal mind and so on: an immaterial force to explain the relationships between the material things, Debussy's "space between the notes." Yet since the soul seems to be explained as a material term, much like "ether" was posed as a material filling all of space, it's easily dismissible as a scientific concept for being unobservable, which is ironic since science itself is an immaterial force of explanation which has no observable effect on the processes it describes.
I don't like the word 'soul' because of its history. In antiquity, a soul meant that which makes something alive, anima in Latin. Plants had souls, i.e. life. The word changed to reflect certain theological ideas. However, what of the spirit? Spirit connotes that which is immaterial and that is what we're discussing--the immateriality of the mind. Soul is never a material term though the intellect is something that cannot be observed. As scientific concepts, like all conceptions or conceputalizations, are entities of the mind, the fact that the mind is, in itself, immaterial remains.
Quote: Is science stored in one's brain? It's written in text, shared in discourse, extrapolated for ubiquitous technologies. This immateriality doesn't require some individualized biofield, and I doubt this to be the case with memory. A memory can be written down, shared in conversation, associated with a myriad of emotional triggers and physical correlates, extrapolated for one's work, relationships and state of mind: an external reality is shaped by, and in turn continuously influences, one's mental landscape.
A conflation of the signification with that which it signifies. One cannot write a memory down, one can only write words which signify a memory.
Quote: My memory is clearly dependent on my individualized biological experience, and everything indeed went through that brain, but it's the life I've created or gone toward and the surroundings I've chosen or found that color my thoughts of the past (that color is grey, lately). There may be a kind of neuronal "muscle memory" that reiterates the same associations and calls upon the same frames until new experiences mix things up.
Maybe, and here's how to extricate ourselves from this philosophical puzzle: create a mind. If a mind, and by that I mean that which is able to conceptualize, is merely matter, use the wires, what-have-you, to build one, i.e. AI. I see they're still working on it. When that happens, and not until, we are forced to conclude, if we don't want to give up our notions of reality, that the mind is immaterial.
Thanks for the response.
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