I’ve been thinking about the ol’ Cartesian mind/body problem of late. I guess it all started on Friday night when I went out to catch up with some old high school friends. They had recently gone to a psychic and were shocked by the psychic’s accuracy. They told me about how he managed to guess things that he couldn’t possibility have known about. The conversation then meandered to the topic of the mind and whether there is there any possible defense of dualism, the idea that the mind and the body are two completely separate entities. The next day the thought kept persisting so much so that I texted my rigidly physicalist friend Mark, to try and see whether there is any defense to dualism. This is how the conversation went:
Paul: Being the nist ardently physicalist I know, how do you account for consciousness. In two words or less….
Mark: Illusory.
Paul: Well done.
Mark: Ever had a thought just “occur” to you, apropos nothing in particular? Thinking about that process and think about every thought you’ve ever had, and every action you’ve ever performed. Are they of the volition of ‘Paul Taylor’ or are they just a series of occurences? If you were in and car accident and your brain was damaged, or it was permanently altered by drugs, people say “that’s not the real Joe Asphalt” but really, it is. There is no pure entity trying to express itself from behind a collapsed wall. The vicissitudinal nature of our personality should be proof enough of….did you want me to keep going? What brought this on?
Paul: If what you just said was true then it would be impossible to say what you just said IS true. How could we possibly know that physicalism was true if all our mental processes were the arbitrary movement of atoms in the brain. If that were so then our belief that physicalism is true would be nothing more than the said arbitrary movement. The result being I would have to doubt physicalism. No reason for the questions, just been thinking about the mind/body problem.
Mark: Well then we get back to the quandary of knowledge. I wouldn’t necessarily describe them as arbitrary, as they are influence by our neural patterns, hormones, diet etc. But without any real “meaning.” Anyways, our thought processes can be measured empirically, so the level of faith required to believe such an idea would be minimal. But I see what you are saying**. Here’s a question: if we had the technology to scan your brain and replicate it on computer, with absolute precision, is that replication as valid an entity as you? When I was younger, and was told of Heaven, I understood that if all my friends and family were present there would be disputes, and grudges and quarrels. This is contradictory to what they taught you of heaven. I came to the conclusion that it wouldn’t actually be them, but a representation of them, and that that representation was just as valid as the real person, for Heaven to be real. Then I thought the whole thing was stupid. **apparently we can’t trust our senses or our thoughts. What did Plato call them? Forms and ideas or something?
Paul: Yeah forms. So what you are saying is that my belief that physicalism is uncertain is nothing more than a product of the hormone levels in my brain which cause the synapses in my brain to fire which causes me to text you to explain to me why the hormone levels in my brain are somehow incorrect and have generated the misfiring on my synapses? Sure our thought patterns can be measured, but if you hooked me up to a machine would you not be able to tell that I was thinking about the mind body problem only that I was using the areas of my brain which correlate to logical reasoning. That brain in the computer thought experiment really has my synapses firing.
Mark: I don’t think it’s misfiring. It isn’t so linear
Paul: Well I used the term metaphorically. But what do you mean?
Mark: Bah, I was in the taxi typing when the drive asked me to google something. It wasn’t meant to send.
Mark: Anyway, it’s not so linear. Those reactions are all occurring, but combined with all other areas of the brain – particularly those responsible for memory and imagination – to form the basis of what you do, or your personality. Not the other way around – your personality (or soul) governing those synapses. Anyways, brain scanning techniques are becoming increasingly sophisticated, right now in India they use brain scans as evidence ont trails as lie detectors, and it’s being trailed in America! of course there is controversy. I can see this leading to new, improved and universal languages and ways of communicating in the future as brain scanning is perfected.
Paul: Just remember with those MRI scan post hoc ergo propter hoc. I am not completely convinced of physicalism just yet.
Mark: What alternatives speak to you most? I’m happy to be convinced otherwise on any issue. I’m not as learned as I’d like. And new information is always being garnered and new ideas generated by our little species.
Paul: I really don’t have another suitable explanation and I think physicalism is a strong theory but I don’t think we should stop thinking about other possibilities beyond a material explanation. Or at least we should remain critical of the weaknesses in the argument.
The conversation ended, for the time being, after that. I just continue to wonder that if my thoughts are nothing more than the confluence of activity in the neural patters of my brain, which are completely divorced from my own volition, then the fact that I am doubting this point indicates that there could be something beyond such which is invariably causing such thoughts. If Descartes was wrong and we are forced to doubt not only our senses but also our thoughts then essentially we can believe nothing, including our belief that we can believe nothing. But isn’t this absurd?
The other point about brain damage, I find interesting. It has been established that when certain parts of the brain are damaged certain behavioural deficiencies are natural corollaries. In this sense damage to the brain affects certain behaviour patters, but what is the effect on the mind? I would suggest that it is impossible to determine what the effect is on the mind. All we can study is the correlation between brain damage and its behavioural response in patients. It tells us nothing as to their state of mind. Drawing on Nagel’s what-it-is-like-to-be-a-bat-hypothesis, even if we knew every possible thing about the brain of a severely retarded person, we know absolutely nothing as to the state of their mind nor could we ever possibly know such through the application of empiricism. I often wonder what is going on in the minds of severely retarded person when I see them in the street. The only way I could every know is to severely retard my own brain in the same manner. Of course, I am not going to do this, and even if I did, I wouldn’t be able to ”snap out of it” and then report my findings.
I suppose I am critical of physicalism not on the basis that I want to justify quackery such as God, or the power of psychics or such bullshit, I just don’t like the idea that physicalism seems to be a foregone conclusion in many (educated) circles. The counterargument is that one must give physicalism time to resolve all of its weaknesses, but one could easily say that you must give dualists more time to respond to its critics. From a future perspective, my current critique of physicalism will possibly be tantamount to a person today trying to argue that the sun actually revolves around the Earth, but until such times as I am completely convinced that physicalism has accounted for all doubt in my mind, I intend to maintain at least a modicum of skepticism.