Discovering the Philosopher in You: Part 12: The Self: Who Am I?

Continuing the series, twelve of fourteen... Who am I?  What is the "self"?  Either Prof McGinn prefers philosophy of the mind to other parts of philosophy, or these really are the most important questions of philosophy.  In a way I find it a bit off-putting that he only devotes one lecture to the question of God (that's next).

So Descartes had apparently proven that the self exists with his, cogito ergo sum, but, there's still more to be said than just that 'I' exist.  Things like why does the self seem to change significantly over the course of one's life, but at the same time, it persists despite these changes.  What sort of thing can the self be?

According to the lecture there are three primary theories about the self.  The simple ego theory, which falls neatly within the dualist framework, says the self is like an indivisible immaterial mental substance not unlike the soul or spirit.  The self goes beyond the mind and the body, like the peg that your mental states and personality are hung on and taken off of at different times and ways.  Prof McGinn talks about the issues with this concept, how can the self be something that is nothing.  This thing that's not a thing at all, loosely related to the mind.  So, this thing that is quintessential to my existence is something about which nothing can truly be said, since it's some indescribable mental substance.

Then there's brain/body theory which falls within the materialist framework.  The self is nothing more than the brain which is a complex physical substance, not a simple immaterial substance as the dualist would hold.  Therefore, when a materialist refers to the self, it's just a part of the brain construct that retains one's identity.  There are many difficulties with this theory and several interesting thought experiments, many of which have been shown in various science-fiction movies/books.  Pretty much any way of transferring one's brain, memory, or thoughts into a different person or body.  Like in the third movie in the Matrix trilogy, the Neo character transfers his consciousness into the machine construct/computer.  Did that mean that he was dead?  What about if you could transfer all your memories and/or brain into an assembly-line body?  Is that no longer the same person?  Presumably yes that is now you.  So, the body is not the self and neither is the brain.  Based on these thought experiments, it seems clear that the self has little or no relation to the body or the brain.  The most difficult one is the idea of splitting your brain.  There is some interconnectedness in the brain hemispheres, suppose one could divide your brain between two bodies.  Would you cease to exist?  Presumably no, if anything it would be multiplying yourself.

Lastly, the mental connectedness theory, basically the idea that there is no self as a bearer of mental states, just the mental states themselves, a stream of consciousness.  There really is no continual self, it's an illusion borne of a flow of mental states.  This may seem to fit, but there are difficulties with this idea as well.  Like the previous example of splitting the brain, the same problems with the brain/body theory apply here, if this were possible it would show that there must be a self to experience the mental states that one has.  That's a complicated example of a breakdown in this theory.  A much simpler issue with the theory arises when one has no mental state going on at all.  During certain parts of the sleep cycle there's basically nothing going on mentally.  Or getting knocked out.  We're not talking brain-dead, I'm relatively sure everyone would agree that is death.  But, what about when the stream of consciousness is interrupted?  Is the person dead?  Presumably no.  Whatever the case, it doesn't seem like this is a sufficiently strong theory either.

So we're left with another deep mystery much like the mysteries of the mind-body problem and consciousness coloring our experience of the world around us.  As usual, I don't really have an answer to this problem.  I'm comfortable with the simple ego and it's consistency with dualism and theology, but I don't want to just cop out saying, "well, this is the way I believe even though there's no way to prove it."  Though, since there's no way to prove any of these theories that might be the answer everyone has to give.

Discovering the Philosopher in You: Part 9: Mind and Body: How Are They Related?

Continuing the Discovering the Philosopher in you series here with part nine of fourteen.  This lecture's unanswerable  problem is about the differences (if there are any) between the mind and the body/brain.  Like the lecture I'll try to layout the two (main) ideas, without commentary, then comment on the weaknesses and what I think about each side.

First dualism.  Made famous by (though arguably not original to him) Descarte came up with this idea and fleshed out the logical arguments behind how the mind is separate, distinct, and different than the body/brain (for the remainder of this entry when I say 'body' just understand that I'm [more than likely] referring specifically to the brain as the controlling organ of the body).  For one of his main arguments he used for dualism Descartes used identity property laws.  The essence of the mind is in thought, which isn't a measurable substance.  You can't measure the size of an idea or concept.  I am thinking of a white elephant right now (bet you are too) and you cannot tell me how big that thought is.  It cannot be measured in pounds or inches or any other system of measurement.  The human brain (head) is eight pounds (thanks cute kid from Jerry MacGuire) and even the electrochemical impulses in the brain can be measured using electroencephalographs and other tools.  Therefore based on the properties of identity, they cannot be the same thing if they are different essential characteristics.

Now materialism.  This is a much easier to explain idea because the idea of materialism is simple, the brain is all there is.  There is no mind-body problem, there's no such thing as the mind as a distinct thing from the body.  The reason we say 'mind' and other mind-related terms, is simply a difference in terminology.  Saying, 'mind' is the same as saying 'brain' and saying, "I feel angry." is the same as saying, "there's a certain state of chemicals in my brain."  The only dualism is in terminology.

Now, both have their problems, and to be perfectly honest I don't have any answers.  I feel that both sides are intractable and cannot offer all the answers.  For dualism the primary problem is in the interaction between mind and body.  If the mind is intangible then how does or how can it influence the body?  Is it a two-way street?  Is it a one-way?  Is there no interaction?  None of these seem possible.

On the other hand, materialism just kills all conception of the mind.  As hard as one might try, one cannot get rid of the mind, thoughts cannot be simplified to just chemical processes.  Even knowing that one's brain is mainly a complex system of electrochemical reactions to stimuli doesn't make me think of those processes while I'm thinking.  It seems to be obvious that thought is beyond just the chemical processes that go on inside your skull.

Really this discussion boils down to atheism and theism.  Either there is something more than just the material or there isn't.  If you believe there is no such thing as god, then there must be no such thing as the mind/soul/spirit.  If you believe there is something more than just the material, then there is some form of mind distinct from the body.

Here's my personal problem in this question, I think it's indubitable that there must be something more than just our bodies.  I'm a dualist (I'd say that any theist is and must be), but I have absolutely no idea how the two different parts interact.  From theology it's obvious that God is (in some ways) immaterial and spirit, akin to soul or mind, but man isn't God.  Now my theological answer is that God has made man in His image in that our souls can interact and influence the material to a limited extent like his Spirit is active in our lives and world.  I don't have any better answer than that.